PRTG Network Monitor - Version History

Fixed

Licensing

License Activation

Stability improvements for the changed license activation system

Fixed

Licensing

License Activation

Stability improvements for the changed license activation system

Fixed

Licensing

License Activation

Stability improvements for the changed license activation system

Fixed

Sensors

WMI Sensors

Stability improvements for WMI sensors

Fixed

Licensing

License Activation

Stability improvements for the changed license activation system

Fixed

Licensing

License Activation

Stability improvements for the changed license activation system

Fixed

Sensors

DNS	The DNS sensor query type Host address IPv6 (AAAA) works again. This option caused the error message “Record not found (PE112)” in some cases. We also improved IPv6 parsing in general.
EXE/Script and EXE/Script Advanced	The JSON result parser correctly evaluates the ShowChart and ShowTable values and sets these options as returned by your script.
Oracle Tablespace	The Oracle Tablespace sensor now uses the identifier you have set when adding the sensor. You can also define if you want to use SERVICE_NAME as sensor name prefix to distinguish sensors for several databases on the same server more easily.
SNMP Printer	On some HP printer types, adding SNMP Printer sensors could lead to null byte errors in rare cases. This should not happen again.
SSL Certificate	The SSL Certificate sensor can now evaluate Subject Alternative Names (SAN) additionally to the Common Name (CN). Just choose the new option Compare and show 'down' status if common name/alternative names and address/SNI do not match for the Certificate Name Validation sensor setting.

Fixed

Reports

PDF Generation

PRTG uses a correct fallback port now if the default PDF port 8085 is blocked at startup.

Fixed

WebGUI

Tree Map	The Tree Map view refreshes automatically again.
Various	We fixed several other minor issues in the PRTG web interface.

Fixed

Various

Languages	Updated language files
User Manual	Updated PRTG user manual
All Parts of PRTG	Many other minor improvements and fixes which didn’t make it on this page.

Changed

Licensing

License Activation

In this version, we have changed the technology of how PRTG servers are licensed. Most customers will not see any difference. However, as an experienced PRTG user you will notice some improvements and changes.

If you want to migrate your installation to another hardware, please deactivate your license first on the existing installation to allow for a hassle-free activation on the new hardware. To do so, go to Setup | License in your PRTG web interface.
There is only one PRTG installer now which works for both Freeware/Trial editions and commercial editions, so all editions will have the same version number as of the current version 16.4.28.7260 (as of 16.4.28.7199 in the Preview release channel). Before, the numbers have differed in fourth place (you have seen version information with a slash symbol to reflect this difference between Freeware/Trial and commercial editions in previous release notes).
If you run a Freeware or Trial now and you want to upgrade to a commercial edition, you do not have to download and run a commercial installer anymore. Just provide your new commercial license key in the PRTG web interface to upgrade your running PRTG instance to a paid license.
We reworked the License page under Setup in PRTG and simplified the process to change and activate a license.
If your PRTG server is offline, you can now activate your license immediately and do not have to wait for an email activation response. Offline activation is necessary once in each maintenance period.
You cannot run PRTG without activation any more, not even for 10 days.

Improved

Remote Probes

Remote Probe Install

We considerably simplified the installation and configuration process for new remote probes! The remote probe installer will now complete almost all steps automatically.

Just make sure your PRTG core server accepts incoming probe connections, download and run the installer on your remote system, approve the connection, and enjoy your new remote probe in PRTG!

Fixed

Sensors

WMI Sensors

Stability improvements for WMI sensors: Timeouts in meta-scans of WMI sensors could result in crashes.

Fixed

Server

Core/Server

We have fixed a load configuration error that occurred in rare cases when starting PRTG.

Fixed

WebGUI

Maps	Stability improvements for maps and the Map Designer

Fixed

Sensors

WMI Sensors

Stability improvements for WMI sensors

Fixed

Email Delivery

Enhanced error handling in case of failed email delivery

Fixed

Sensors

Cisco IP SLA	The Cisco IP SLA sensor shows correct values again.
EXE/Script	Security fix for the EXE/Script sensor
GitLab Build Status	Several improvements and fixes for the GitLab Build Status sensor
NetApp cDOT	Several improvements and fixes for the NetApp cDOT sensors
SNMP NetApp Disk Free	The Inodes Free channel shows correct values now. Under some conditions, this channel displayed wrong values due to an overflow in the calculation.

Fixed

Security

Core/Server

Minor security fix

Fixed

WebGUI

Sunburst

You can zoom in and out the sunburst view again. Additionally, you can change the position of the sunburst via drag and drop.

Fixed

Maps

Map View

Fixed potential “line too long” errors which have occurred in some scenarios

Fixed

Various

Several other minor fixes and improvements to all parts of PRTG, as well as an updated user manual

Important

Sensors

SSL Security Check

We changed the behavior of the SSL Security Check sensor and adjusted its TLS 1.0 security rating! It will show a warning status (weak security) for accepted TLS 1.0 connections as of the previous PRTG version 16.3.26.

Please see this article for more information: How do you determine the protocol security ratings of the SSL Security Check sensor?

Improved

Sensors

Removed Beta Status

The following sensors are not in beta status anymore and are now fully supported.

Business Process Sensor
Common SaaS
HTTP Data Advanced
HTTP Push Data Advanced
NetApp cDOT I/O (SOAP)
NetApp cDOT Physical Disk (SOAP)
NetApp cDOT System Health (SOAP)
Oracle Tablespace
SNMP Cisco UCS Physical Disk
SNMP Custom Advanced
SNMP Custom Table
SNMP Dell EqualLogic Logical Disk
SNMP Dell EqualLogic Member Health
SNMP Dell EqualLogic Physical Disk
SNMP Juniper NS System Health
SNMP Printer
SSL Security Check

Improved

Server

Core/Server

Performance and stability improvements for large PRTG installations

Fixed

Sensors

Channels	Rounding small channel values is more accurate now.
Cisco IP SLA	Stability improvements
Citrix XenServer	Citrix XenServer Host and Citrix XenServer Virtual Machine sensors support Xen7.
HTTP Advanced	The HTTP Advanced sensor uses correct decimal separator also in compatibility mode.
HTTP Push	Stability improvements for HTTP Push Count, HTTP Push Data, and HTTP Push Data Advanced sensors.
HTTP Transaction	The HTTP Transaction sensor now sets the correct status derived from the keyword check.
Hyper-V Cluster Shared Vol. Disk Free	Stability improvements
NetFlow Sensors	NetFlow sensors now support flow traffic from ASA version 9.1 and higher.
Python Script Advanced	Security fix for the Python Script Advanced sensor
SNMP Cisco System Health	The SNMP Cisco System Health sensor shows correct values which match the values from the target device.
SNMP Dell EqualLogic Logical Disk	The SNMP Dell EqualLogic Logical Disk sensor finds now also volumes without assigned groups/members.
SQL v2	SQL v2 sensors support whitespaces and tabulators in declare queries. In the sensor message of SQL v2 sensors, the placeholder {0} is replaced by the defined table value again and will not just return "Ok".
SSH INodes Free	The SSH INodes Free sensor shows now an error message instead of 0% in case of an error.
Windows Physical Disk I/O and WMI Logical Disk I/O	Both sensor types now show decimal places. The unit of the channel values has changed to ms to receive more detailed values. Please add the sensor anew to see this change.

Fixed

Server

Config	Stability improvements for the configuration file. In certain cases, the PRTG server could not start because of NULL bytes in the config.
Tickets	PRTG will now check the ticket database on startup and once a day, try to repair it if it is corrupted, and tell you about such an event.

Changed

Tree Version

Tree Version Update

The configuration file of this version is not downwards compatible with previous PRTG versions.

Fixed

Various

All Parts of PRTG

Many other minor improvements and fixes to all parts of PRTG, as well as an updated user manual.

Important

Sensors

SSL Security Check

We changed the behavior of the SSL Security Check sensor and adjusted its TLS 1.0 security rating! It will show a warning status (weak security) for accepted TLS 1.0 connections as of this version.

New

Sensors

GitLab Build Status	The new GitLab Build Status BETA sensor monitors the status of the latest build on one specific branch. You can monitor your builds in either your own GitLab environment or on GitLab.com!
WMI Microsoft SQL 2016	You can now use the new WMI Microsoft SQL Server 2016 sensor to monitor the performance of your MS SQL Server 2016 instance!

New

WebGUI

Logout Countdown

If you have defined an automatic logout from the PRTG web interface for PRTG user accounts because of inactivity, the logout countdown appears now with a nice graphical display one minute before the actual logout.

Improved

Maps

Map Designer	You can now undo and redo up to 50 changes when working on a map. Changes are saved persistently in your configuration, so you can even revert changes later.
Public Maps	You can now disable links on public maps with a dedicated maps setting.

Improved

Sensors

Amazon CloudWatch	Amazon CloudWatch sensors include the AWS region Asia Pacific (Mumbai).
Folder	We improved the sensor usability: The down and warning states for the file age check are now based on channel limits so the sensor will still receive data if this check fails by definition. You can still define the setting for the file age check when adding the sensor, but for existing sensors please use channel limits.
IMAP	We changed the way settings look like for a better understanding of their functionalities. Note that we did not change any functionality.
Meta-Scans	As an advanced PRTG user, you can now write your own generic meta-scan for any sensor type. For details, please see this article: https://kb.paessler.com/en/topic/70882
SSL Certificate	The SSL Certificate sensor supports SOCKS5 proxy. We also improved the certificate validation and the sensor shows Common Name and certificate thumbprint in the sensor message.
SSL Security Check	The SSL Security Check sensor supports SOCKS5 proxy. TLS 1.0 is now considered to be insecure.
WMI Sensors	Various performance and stability improvements for WMI sensors.
WMI Volume	Template support for the WMI Volume sensor.

Improved

Notifications

HTTP-based Notifications

HTTP notifications and notifications based on custom SMS providers support SNI.

Improved

Security

Encryption	Improved encryption for PRTG connections with a fallback mechanism for some sensor types to support stricter configurations which exclude TLS 1.0 entirely.
PRTG Administration Tool	Files are uploaded via FTPS now.

Changed

Mobile Web GUI

Removed Mobile GUI

As announced in previous versions, we have finally removed the Mobile Web GUI from PRTG. After you have updated to this version, you will not be able to access PRTG via this interface. Please see this article for details: https://kb.paessler.com/en/topic/66920

Fixed

Sensors

Windows Network Card

We fixed an issue that caused too high values in the sensor data (and spikes in graphs), for example, when a target device was restarted.

Fixed

Sensors

SNMP Trap Receiver

Bugfix for problematic UDP messages.

Fixed

Core

Reports	In some configurations, graphs where missing in (historic data) reports.
Core	Stability improvements.

Fixed

Sensors

Traffic Sensors

In certain cases, traffic sensors and some other sensor types with difference channels displayed too high values (spikes) in graphs. This is only a display error that this update fixes for new data. Optionally Recalculate PRTG Graph Data Cache in the PRTG web interface under Setup | System Administration | Administrative Tools after this update to correct the graph display for older data if needed.

Various Sensors

Sensor types that run an executable using the Paessler.xml.dll (for example, SQL v2 sensors) handle difference channels correctly again.

Fixed

Reports

Graphs

Historic data reports display graphs again. In certain cases PRTG used an incorrect address to load graphs.

Fixed

Sensors

Cisco IP SLA	Fixed an error that caused a down status of the Cisco IP SLA sensor in certain cases.
HTTP Advanced	HTTP Advanced sensor now correctly escapes quotation marks when used in the sensor settings.
Oracle SQL v2	Fixed an issue caused by the connection encryption of the Oracle SQL v2 sensor.
SNMP Custom Table	SNMP Custom Table sensors now use the correct identification column even if you add them via auto-discovery without having an MIB available.
SNMP SonicWALL VPN Traffic	Fixed auto-discovery with the default device template for the SNMP SonicWALL VPN Traffic sensor.
SNMP Synology System Health	The SNMP Synology System Health sensor works also on target devices with missing temperature OID.
SNMP Traffic	Improved port name update and handling of very large traffic counters.
SQL v2 Sensors	SQL v2 sensors can handle float values. Furthermore, the enabled “Count table row” option does not cause an error anymore when 0 rows are returned.
Various Sensors	Fixed debug option (“Write Result to Disk”) for several sensor types.
Various Sensors	Improved encoding method for various sensor types: Amazon CloudWatch sensors NetApp cDOT sensors Radius v2 SQL v2 sensors

Improved

Various

All Parts of PRTG	Many other minor improvements and fixes to all parts of PRTG, as well as an updated user manual
SNMP Sensors	We removed the “SNMP Debug Log” option to avoid filling the whole disk on the probe system by accident.

Fixed

Sensors

SNMP Trap receiver

SNMP Trap Receiver sensors display received trap messages with line breaks and final 0 correctly again.
As before, zeros within texts will be displayed as hexcode.

Fixed

Probe System

We improved the probe system's WMI stability.

Important

Maps

Geo Maps

We are currently rerouting the map requests from MapQuest to Nokia Maps.

Fixed

Security

Server	We fixed a potential CBC cipher vulnerability (CVE-2016-2107) by disabling the AES-NI extension ("Intel Advanced Encryption Standard Instructions"). Older browsers and other clients which do not use GCM ciphers may lose performance per CBC calculation because of this fix. This fix also includes the library update to OpenSSL version 1.0.1t
WebGUI	We fixed a potential XSS vulnerability: This XSS exploit has been only possible when accessing the PRTG web interface with Firefox. See this article for details about Firefox and security: How secure is it to access the PRTG web interface with Firefox?

Fixed

Sensors

SSL Certificate

The SSL Certificate sensor shows a down status now if "Certificate Name Validation" fails (common name check).

Fixed

Maps

Access Rights

PRTG users with sufficient access rights can view maps correctly again. The map refresh caused an incorrect access rights error for certain PRTG user groups before.

Changed

Licenses

License Names

We changed the license name of PRTG Unlimited to PRTG XL1 and replaced the license PRTG 5 Core Global with PRTG XL5. PRTG XL1 allows an unlimited number of sensors on 1 core server installation, PRTG XL5 on 5 core servers worldwide. Please consider the PRTG system requirements for installations with many sensors.

Improved

Probe System

Stability

Several minor fixes for probe stability and WMI

Fixed

Probe System

Performance	Optimized pipe handling of EXE based sensors
SSH Engine	Fixed AV in SSH dll

Important

Sensors

Deprecated Sensors

As announced in previous PRTG versions, we have removed deprecated sensor types from PRTG. Running sensors of this type will stop monitoring and show a down status as soon as you update to this version. Please see this article for details: The PRTG Sensor Cleanup
Note: The deprecated sensor types ADO SQL, Microsoft SQL, MySQL, and Oracle SQL will continue monitoring (now using the new SQL engine in the background) and keep their configuration. Please see this article for details: Migration Path for Deprecated SQL Sensors

Changed

Notifications

Notification Summarization

PRTG collects up to 25 email notifications per defined gathering interval and sends the summarization as soon as this number is reached. Because of this, you may receive more than one summarization per gathering interval. The reason for this change is that some email clients have issues with long (HTML) emails.

Improved

Sensors

HTTP Sensors	HTTP sensors added by the auto-discovery are now named HTTP, HTTP (8080), or HTTPS depending on the connection to the target device. This helps to distinguish automatically added HTTP sensors at one look.
Oracle Tablespace	The Oracle Tablespace sensor includes new channels for “Database Size” (current size of the database) and “Database Size on Disk” (managed tablespace).
SQL v2 Sensors	You can now use placeholders in SQL query files of SQL v2 sensors (@prtg for Microsoft SQL, MySQL, PostgreSQL, :prtg for Oracle SQL, ? (question mark) for ADO SQL). Provide the input parameter in the sensor settings and PRTG will replace the placeholder in the SQL query. This is a great option if you use many SQL sensors where the queries differ in only one parameter! Furthermore, a change trigger is available for changing sensor messages of SQL v2 sensors.
Windows Network Card	The Windows Network Card sensor can show more data now, including 64-bit counters, virtual network interfaces, teamed adapters, and virtual connections (for example, VPN).

Improved

System Information

Software Table	The software scan now always uses credentials set for the device’s parent probe.
Hardware Table	The hardware table shows the RAM of the device.

Improved

Maps

Maps Design

Connection lines between objects on maps can now show colors for all object states.

Fixed

Various

SSH Sensors	Stability improvements for the new SSH engine
Web Server	Fixed potential timeout errors in the WebGuiStarter when starting the PRTG web server on a system with already occupied port 80.
System Information	Performance improvements: Paused devices will not be scanned automatically anymore.

Fixed

Various

SSH Sensors	Major fixes for the new SSH engine
Syslog Sensor	Fixed potential deadlock of Syslog sensor
Notifications	Stability improvements for email notifications

Fixed

Various

SSH Sensors	Compatibility fixes for the new SSH engine
Probes	Stability improvements for PRTG probes
Security	Fixed a potential XSS vulnerability and other minor security fixes
WebGUI	Several minor fixes for the PRTG web interface

Fixed

Sensors

SQL v2	SQL v2 sensors work again when you use SQL server authentication. These sensors showed an error in the previous PRTG version 16.2.24.3685/3686.
Cisco IP SLA	ECHO monitoring with the Cisco IP SLA sensor works again. These sensors showed an error in the previous PRTG version 16.2.24.3685/3686.

Fixed

Auto-Discovery

Performance

Fixed performance impact that occurred in certain cases when running the auto-discovery

Fixed

WebGUI

Login	Auto-complete of username and password on the login page works again.
Various	Several other minor fixes for the PRTG web interface

Fixed

Sensors

Cisco IP SLA	The Cisco IP SLA sensor shows correct values in the channels “TCP RTT” and Max. Latency Source – Destination”. We also improved performance and stability of this sensor.
Citrix XenServer	Citrix XenServer sensors use the correct unit for additional channels.
Dell PowerVault	Dell PowerVault MDi Logical Disk and Dell PowerVault MDi Physical Disk sensors can read values from a 64-bit registry.
NetFlow	NetFlow sensors which you clone to other probes receive data automatically.
Sensor Factory	Deleting channels of the Sensor Factory sensor works without causing an error. Sometimes this resulted in an Access Violation in the PRTG core.
SNMP Cisco ASA VPN Traffic	SNMP Cisco ASA VPN Traffic sensor supports 64-bit counters.
SNMP NetApp Enclosure	SNMP NetApp Enclosure sensor now includes default limits for all channels.
SNMP RMON	SNMP RMON sensors portname templates show the correct port.
SQL v2	SQL v2 sensors work with passwords that contain certain special characters.
SSH SAN Physical Disk	Fixed occasional spikes in the data of SSH SAN Physical Disk sensors.
VMware Datastore (SOAP)	Channel Unit Configuration for VMware Datastore (SOAP) sensors is now available.
VMware Virtual Machine (SOAP)	VMware Virtual Machine (SOAP) sensor can now follow changes in the assignment of IDs and metrics on VMware. Affected sensor channels showed 0 values in this case before.
Port Range	Fixed template creation for devices with Port Range sensors

Fixed

Notifications

Email Fallback Server	The fallback SMTP server of PRTG can now send notification emails also if you use SASL authentication.
Eventlog	Event log notifications to the PRTG Network Monitor event log now work.

Fixed

Auto-Discovery

Icons	Auto-Discovery adds the correct vendor specific device icons again.
Stability	Stability improvements: In certain cases auto-discovery caused access violations.

Fixed

Various

WebGUI	The timer of the automatic page refresh resets when you change tabs and pages in PRTG.
Reports	Data files of reports show the data and time in a readable format now. Previously this column included data in raw format only.
All Parts of PRTG	Many small fixes and improvements for web interface, Enterprise Console, and all other parts of PRTG, as well as an updated user manual

New

System Information

You can now view system information for all devices that PRTG monitors (when PRTG has the appropriate credentials). The devices can be either a supported Windows version or they have SNMP enabled to get information data.

Open the "System Information" tab on a device overview page and see what hardware and software is installed, what processes and services run on this computer and which user accounts are logged in. Together with your day-to-day monitoring you get a really profound knowledge about your IT infrastructure by using only one source—your PRTG Network Monitor!

New

Sensors

SNMP Dell EqualLogic	This version comes with three new sensor types for EqualLogic monitoring! Native support for EqualLogic monitoring has been demanded by many of our customers so we are glad that we can offer this feature to you now. You can monitor logical disks, physical disks, and the health of storage array members with three dedicated sensor types: SNMP Dell EqualLogic Logical Disk SNMP Dell EqualLogic Member Health SNMP Dell EqualLogic Physical Disk
ADO SQL v2	The new ADO SQL v2 sensor can monitor any data source that is available via OLE DB or ODBC. It is the successor of the deprecated ADO SQL sensor.
Windows Physical Disk I/O	The new Windows Physical Disk I/O sensor monitors input/output operations on a disk. Important note: This sensor type supersedes the Windows Physical Disk sensor which is deprecated as of now and will be removed with the next PRTG version. Please replace the deprecated sensor with the new Windows Physical Disk I/O sensor!
WMI Logical Disk I/O	The new WMI Logical Disk I/O sensor monitors logical disks on a Windows device. Important note: This sensor type supersedes the WMI Logical Disk sensor which is deprecated as of now and will be removed with the next PRTG version. Please replace the deprecated sensor with the new WMI Logical Disk I/O sensor!

Improved

Sensors

SSH Sensors	SSH sensors use a new SSH library to provide best performance and security. Note: You can still use the old SSH engine as legacy version by selecting the deprecated “Compatibility Mode” in the sensor or device settings, but we will remove this option soon.
Beta Sensors	The following sensor types are not in beta status anymore and are now fully supported: Cloud HTTP Cloud Ping SSL Certificate VMware Datastore (SOAP)
Amazon CloudWatch	Amazon CloudWatch sensors support the region Asia Pacific (Seoul).
SNMP CPU Load	You can now store limits of the SNMP CPU Load sensor's “Total” channel into device templates.
SQL v2	SQL v2 sensors have now the option to count table rows which a SELECT statement returns. You can also use @-variables in your SQL statements as of this version.

Changed

Placeholders

Status Placeholder

We removed the %state placeholder because it duplicated the %status placeholder. Please check your notifications and change this placeholder to %status if necessary.

Fixed

Core/Server

Setup

We fixed the PRTG setup that crashed under certain circumstances.

Fixed

Sensors

WMI Free Disk Space (Multi Disk) Sensor

Limits that you define in the sensor settings work again.

Improved

Languages

Updated Language Files

Updated language files for French, Chinese, Russian, Spanish, and Brazilian

Fixed

Various

Server/WebGUI

Various minor fixes and improvements

Fixed

Sensors

Exchange Database/SQL v2	Channel Unit Configuration for Exchange Database (Powershell) and SQLv2 sensors is now available.
Exchange Database DAG	Exchange Database DAG (Powershell) sensors now properly work on Exchange 2010 and Exchange 2013 with the latest updates.
EXE/Script Advanced	Metascans for custom EXE/Script Advanced sensors support PowerShell scripts in addition to exe-files.
HTTP XML/REST Value	Security fix for the HTTP XML/REST Value sensor To support whitespaces in nodes of JSON files they are now converted to underscores (_). For example, if you want to search for "some node", you need to enter "some_node" into the node setting field.
jFlow	jFlow sensors correctly use the fields SenderIP, InboundInterface, OutboundInterface, SourceASI, and DestinationASI again.
Microsoft SQL v2	Microsoft SQL v2 sensor interprets Boolean values correctly.
Oracle Tablespace	Oracle Tablespace sensor now uses the timeout setting in the parent device (section “Credentials for Database Management Systems”).
SNMP Cisco System Health	SNMP Cisco System Health sensor can recognize 64-bit memory counters.
SNMP Custom String	SNMP Custom String sensor supports 0 bytes in MAC addresses.
SNMP Custom Table	SNMP Custom Table sensor supports custom OIDs in the name template.
SNMP Linux Disk Free	SNMP Linux Disk Free sensor supports very large partitions/volumes.
SNMP Printer	SNMP Printer sensor no longer duplicates channels after a PRTG server restart.
SNMP RMON	Improved handling of SNMP v1 by the SNMP RMON sensor
SNMP Traffic	SNMP Traffic sensors update interface names correctly if the target device returns "No such object" instead of "No such name"
SNMP Trap Receiver	SNMP Trap Receiver sensor now supports hex content (MAC addresses). The sensor did not show trap content in this case before.
VMware Virtual Machine	VMware Virtual Machine sensor shows latency channels again. These channels were missing on some systems.
Channels	Difference channels of sensors show correct historic data when the probe reconnects instead of zero values. Recalculate the PRTG graph data cache under "Administrative Tools" in the PRTG web interface to fix affected historic data.
Templates	Device templates include value lookups of multi-channel sensors now.

Fixed

Various

Auto-Discovery	Several improvements and fixes for auto-discovery groups
Notifications	Several improvements and fixes for email notifications
Lookups	Fixed historic data for range-based lookups
Maps	Public maps which use the data table map object "Tickets" are now accessible.
Security	Access rights for manually added objects are now shown correctly in the PRTG web interface. Display and actually used rights were inconsistent in some cases.
WebGUI	Many small fixes for the PRTG web interface

Improved

Various

API	We added the new API calls getticketstatus.htm and getticketmessage.htm. You can now also use the parameter subtype for the API call setobjectproperty.htm to set, for example, channel properties.
Manual	Updated user manual
Core/Server	Many other minor improvements and fixes

Changed

Sensors

Deprecated Sensors

The following sensor types are deprecated as of now, you cannot add them any more, and they will be completely removed with the upcoming PRTG version 16.x.25, due out in about 2 months. Sensor types which have been deprecated already before will be removed as well.

ADO SQL
AVM FRITZ!Box WAN Interface v2
INI File Content Check
Microsoft SQL
MongoDB System Health
MySQL
Oracle SQL
Passive Application Performance
Pingdom
POP3 Email Count
SCVMM Host
SCVMM Virtual Machine
SNMP GSA System Health
Virtuozzo Container Disk
Virtuozzo Container Network
WBEM Custom
Windows Last Update (Remote Registry)
Windows Logged In Users
Windows Registry
Windows Scheduled Task
WMI Volume Fragmentation
WMI Windows Version

Please see this article for details: The PRTG Sensor Cleanup

SNMP Custom Lookup

We renamed the sensor type "SNMP Custom Lookup" to SNMP Custom String Lookup sensor. The new name indicates the intended usage of this sensor in a better way.

Improved

Sensors

Core Health	The Core Health sensor includes two new channels that will help you to keep your PRTG installation up-to-date (and safe, for example, by always having all security updates installed): The number of days until your software maintenance expires The number of days since the last update of your PRTG installation
Beta Sensors	The following sensor types are not in beta status anymore and are now fully supported: Enterprise Virtual Array Microsoft SQL v2 MySQL v2 Oracle SQL v2 PostgreSQL
SSL Security Check	The SSL Security Check sensor supports SNI: You can define it in the sensor settings.
HTTP Sensors	For HTTP sensors you can now define if you want to inherit the SNI from the parent device or if you want to determine the SNI from the sensor URL setting only. For more information about SNI handling in PRTG, please see this article: https://kb.paessler.com/en/topic/67398

Improved

Maps

Maps Designer

We added a new icon set for maps and HTML settings are now better reachable in the maps designer.

Fixed

Various

Cluster	Sensors with dynamic channels show data again when you add them to remote probes with enabled cluster connectivity.
Core/Server	Various minor fixes and improvements

Fixed

Various

Enterprise Console	The Enterprise Console shows its usual performance again.
Core/Server	Various minor fixes

Improved

Languages

Updated Language Files

Updated language files for Brazilian, French, Russian, Chinese, Spanish

Fixed

Enterprise Console

Favorite Sensors

Fix for traffic and trap sensors that are flagged as "favorite" in the Enterprise Console

Fixed

Various

Core/Server

Several minor fixes

Fixed

Various

Notifications	Channel tables and icons in HTML email notifications are shown correctly again.
Reports	Scheduled reports are sent out to PRTG user groups again.
Packet Sniffer/Flow Sensors	Filters for Packet Sniffer and Flow sensors work correctly again.
WMI Sensors	Fixed scan exception in ntdll for WMI sensors
Core/Server	Improved scheduler

New

Reports

Data Files	You can now generate CSV and XML data files along with the PDF file of a report for its data tables. This is a great option to import data into other programs!
PDF Generator	We added a new PDF generator for reports to PRTG.

New

Sensors

Docker Container Status BETA	The new Docker Container Status BETA sensor monitors status, uptime, exit code, CPU usage, and memory of a Docker container. Note: To use this sensor type in PRTG, you have to provide certificate and private key to request data from your Docker instance. Please see this article for details: https://kb.paessler.com/en/topic/67250
Amazon CloudWatch Alarm BETA	The new Amazon CloudWatch Alarm BETA sensor monitors the status of configured alarms for CloudWatch services via the AWS CloudWatch API.

Improved

Core/Server

Web Server

Performance improvements for the web server

Improved

Sensors

Sensor Channels	You can now define a scaling factor (multiplication and division) for values of sensor channels with custom units. You can find this option in the respective channel settings. Note: Sensors with a scaling option in the sensor settings do not provide this option in channel settings. There are also some other sensors with custom units that do not support this feature.
EXE/Script Advanced	The EXE/Script Advanced sensor can now make use of a meta-scan functionality. For details please see this article: https://kb.paessler.com/en/topic/68109
HTTP Transaction	HTTP Transaction sensor shows the URL of the page that provokes a warning or error status in the sensor message.
SSL Certificate	Newly added SSL Certificate sensors have limits for the “Days to Expiration” channel by default. This sensor type has also an improved logging (“Write result to disk”). With this option enabled certificates of the cert chain are additionally logged for better debugging possibilities, especially for the “Root Authority Trusted” channel.
SNMP Cisco System Health	Improved performance for the SNMP Cisco System Health sensor
SNMP Sensors	SNMP sensors now use paging for SNMP requests to improve their stability.
Windows Updates Status (Powershell)	You can define a custom port for the Windows Updates Status (Powershell) sensor.
WMI/Windows Sensors	All WMI/Windows sensors provide a debug option.

Improved

Various

Lookups	Stability improvements for custom lookups
Manual	Updated user manual
Languages	Russian is now available as new language in PRTG! We also updated other language files.
All Parts of PRTG	Many small fixes and improvements for web interface, Enterprise Console, and all other parts of PRTG

Changed

WebGUI

Options

We removed the outdated option to automatically refresh whole PRTG pages from the account settings. By default, PRTG only refreshes single page elements. You can still disable auto refresh completely.

Fixed

Sensors

SSH SAN System Health	The SSH SAN System Health sensor adapts an HP firmware upgrade. After the firmware update, some sensor channels might show different data than before. Please try to add this sensor anew to get correct channel data. The corresponding error message is: The sensor encountered some problems. This might be caused by a firmware upgrade. Please try to recreate the sensor.
SNMP Custom Advanced	SNMP Custom Advanced and SNMP Custom Table sensors did not properly take the unit “BytesBandwidth” if you changed the configuration of this unit in a parent device or group.
Dell PowerVault MDi Logical Disk	Dell PowerVault MDi Logical Disk sensor now correctly recognizes disk with a minus (-) sign or an underscore (_) in the name.
SSL Security Check	SSL Security Check sensor prevents connection timeouts in a better way.
SNMP Cisco System Health	SNMP Cisco System Health sensor now shows correct memory utilization above 4 GB.
SNMP Dell PowerEdge Physical Disk	We fixed an issue that caused an “index out of bounds” error in some cases when adding the SNMP Dell PowerEdge Physical Disk sensor.
NetApp cDOT sensors	Fix for Int32 errors of NetApp cDOT sensors (support of Int64 values added). cDOT I/O and cDOT System Health sensors also perform a meta-scan when you add one of these sensor types, so you can create one sensor for one system node. This approach fixes wrong values for the "uptime" channel of the cDOT System Health sensor. Please add these sensors anew to apply the fixes.
SCVMM sensors	SCVMM sensors now show correct status values.
Packet Sniffer	Packet Sniffer sensor shows selected network adapter(s) again.
Windows Network Card	Windows Network Card sensor correctly shows 64 bit values.
SNMP Printer	Improved template handling of the SNMP Printer sensor
SSL Certificate	SSL Certificate sensor shows an "Unknown" status instead an error if the key length check fails. Adding the SSL Certificate sensor using a device template works correctly.
SNMP Custom Advanced	OIDs for the SNMP Custom Advanced sensor support can start with points (.)
SNMP Cisco System Health	SNMP Cisco System Health can show negative values.

Fixed

Notifications

Placeholders

Placeholders in notification emails were not replaced correctly in certain cases.

Release Notes for PRTG 16

December 19th 2016 – Version 16.4.28.7421

Fixed

Licensing

License Activation

December 15th 2016 – Version 16.4.28.7403

Fixed

Licensing

License Activation

December 8th 2016 – Version 16.4.28.7352

Fixed

Licensing

License Activation

December 7th 2016 – Version 16.4.28.7339

Fixed

Sensors

WMI Sensors

Fixed

Licensing

License Activation

December 1st 2016 – Version 16.4.28.7279

Fixed

Licensing

License Activation

November 30th 2016 – Version 16.4.28.7260

Fixed

Sensors

DNS

EXE/Script and EXE/Script Advanced

Oracle Tablespace

SNMP Printer

SSL Certificate

Fixed

Reports

PDF Generation

Fixed

WebGUI

Tree Map

Various

Fixed

Various

Languages

User Manual

All Parts of PRTG

November 2016 to January 2017 – Version 16.4.28/17.1.28

Changed

Licensing

License Activation

Improved

Remote Probes

Remote Probe Install

November 22nd 2016 – Version 16.4.27.7140/7141

Fixed

Sensors

WMI Sensors

Fixed

Server

Core/Server

Fixed

WebGUI

Maps

November 9th 2016 – Version 16.4.27.6984/6985

Fixed

Sensors

WMI Sensors

October 25th 2016 – Version 16.4.27.6845/6846

Fixed

Email Delivery

Email Delivery

October 11th 2016 – Version 16.4.27.6719/6720

Fixed

Sensors

Cisco IP SLA

EXE/Script

GitLab Build Status

NetApp cDOT

SNMP NetApp Disk Free

Fixed

Security

Core/Server

Release Notes
for PRTG 16