To update your PRTG 9 installation use the "Auto-Update" feature: simply navigate to Setup | Auto Update in your installation. Or you can obtain the latest version from the PRTG download page!

Go to Download Page
Manual: Using the "Software Auto-Update" function of PRTG

April 18th 2012 - Version 9.2.1.2307/2308

Note: If you update from version 8.x, please see the update notes in the PRTG 9 user manual.

• Changed: [Sensors] Improved SNMP engine

March 18th 2012 - Version 9.2.1.2279/2280

• Changed: [Probes] Improved remote probe software update process. Much faster probe updating after software update of the core server (especially for installations with many probes).
• Changed: [Sensors] Enhanced SNMP engine that especially improves SNMP V3 performance by up to a factor of 2-10 depending on intervals, SNMP request latencies,  and number of sensors. CPU performance of the probe system is now the primary limiting factor to the number of SNMP V3 sensors that can be monitored by one probe.
• Bugfix: [Sensors] Incorrect warning/error limits in SQL sensors
• Bugfix: [Sensors] Fixes for SNMP V3
• Bugfix: [Sensors] Fixes for NetFlow 9 monitoring
• Bugfix: [Probe] Scheduled restart of local probe did not work properly
• Bugfix: [EC] Some URLs used password= instead of passhash=
• Bugfix: [EC] Fixed incorrect date/time sorting of log display
• New: [Sensors] Added “context name” for SNMP V3 monitoring
• Changed: [Licensing] Starter Edition now has 30 Sensors
• Changed: [Licensing] Updated license terms (clarifications for Corporate Edition license)

February 29th 2012 - Version 9.2.0.2235/2236

• New: [Core] Added Czech Translation
• Bugfix: [Core] In some cases WMI reconnections took up to one hour
• Bugfix: [Maps] Sometimes maps did not work on IE9

February 21st 2012 - Version 9.2.0.2195/2196

• Changed: Support for Google's new Maps API keys, which are shorter now

February 14th 2012 - Version 9.2.0.2175/2176

• Bugfix: [WebGUI] Breadcrumbs could display objects that were not accessible to the user
• Bugfix: [Maps] Map rotation did not work
• Bugfix: [Web Server] Fixed a potential script injection vulnerability
• Bugfix: [Sensors] The sensor "Thread: Context Switches/sec" provided by "WMI Vital System Data (V2)" did not work properly. Note: Existing sensors must be recreated.
• Various smaller bugfixes

January 24th 2012 - Version 9.2.0.2124/2125

• More than 400 changes since V9.1.6 released December 15th
• New: [Sensors] VMware 5 support
  • ESX 5 and Virtual Center 5, and support for vApps
  • New VMware sensors support ESX 4-5. Old sensors will keep working (not rewritten to new ones), but you cannot create the old ones anymore
  • Note: Monitoring is currently limited to one thread at a time because of limitations of the VMware platform. Monitoring with VMware sensors is limited to about 30 sensors at 1 minute interval or 150 sensors at 5 minute interval (recommended)
  • In case you reach these limits you can spread VMware sensors on different remote probes. See knowledge base article for details.
  • Note: For VMware monitoring, the .NET 4.0 framework must be installed on the system running the PRTG probe (either the core server or the system running a remote probe)
• New: [Sensors] Chromium Based Full Page Sensor can now use the Chromium "WebKit" engine for monitoring (as alternative to the IE installed on the probe system)
• New: [Sensors] WMI UTC Time Sensor measures time difference between the system clock of a monitored device and the time of the PRTG system
• Changed: [WebGUI]: Two hands full of additional awesomeness for the AJAX WebGUI (various new features/improvements—see Blog article for details)
  • Rewrite of the sensor selection for reports
  • Libraries can now be created with nested layers/groups
  • Management tab optimized: now including multi-edit of object properties
  • Faster Ajax Web GUI (speed optimized HTML/CSS)
  • Official support for the new device tree views "sunburst" and "treeMap"
  • Added a device tree navigation to the breadcrumbs
  • Multi-edit for "Sensor Display" option (must select multiple sensors of one sensor kind)
  • Display new version releases notes before auto-update is started
  • You can now show/hide channels lines in graphs of sensors
  • Rewritten page for "Setup | Downloads"
• Changed: [MobileGUI] Full rewrite of the Mobile Web GUI
  • Optimized for iOS 3.2+, Android 2.1+/Honeycomb, Blackberry 6+, Windows Phone 7+, WebOS 1.4+, Meego, Kindle 3+, Firefox Mobile, Opera Mobile 11+
  • Based on jQuery Mobile 1.0. Full list of supported platforms
• Changed: [EC] Extended functionality within the Enterprise Console
  • Gets a "back"/"forward" button for viewpoints
  • Setup functions are now available directly within the Enterprise Console window
• Changed: [Sensors] Improved handling of private keys for SSH sensors
• Changed: [Sensors] New DLLs for SQL database sensors
• Changed: [Sensors] Improved FTP Sensor (can now count only new files, too)
• Changed: [Sensors] QoS Round Trip sensor has a RTT (Round Trip Time) channel, Calculation for MOS Score corrected
• Changed: [Sensors] HTTP XML/REST Value Sensor now supports multiple name spaces in XML data
• Changed: [Core] Auto-Discovery can now work with (mixed) lists of DNS names and/or lists of IPs
• Changed: [Notifications] SMS messages can now be trimmed to 160 characters
• Changed: [Cluster] Improvements for the clustering code
• Bugfix: [Sensors] Scale Factor for various WMI Sensors corrected
• Bugfix: [EC] Fixed graph display for EXE/Script sensors
• Bugfixes: Various bugfixes and changes

December 15th 2011 - Version 9.1.6.1962/1963

Note: If you update from V8, please see the update notes in the PRTG 9 user manual.

• New: [WebGUI] Added a “Property Sheet” on the “Management” tab of groups/probes. You can now select one or more objects from the device tree and edit their settings in one place
• New: [Core] You can now allow “read-only users” to acknowledge alarms (this is an user account setting)
• New: [Core] You can now promote users of any PRTG user group to admins (this is an user group setting, if enabled all users of a group are admins). This means that you can now also manage PRTG admins in the Active Directory, too, by creating an AD based group in PRTG and giving this group admin rights. This option is available for all new user groups you create from now.
• New: [EC] Added “View Point” feature. When you start the EC you will be taken back to the same screen/tab/element that was viewed before the previous EC shutdown
• New: [WebGUI] Added new visualization for the device tree, see blog article for details
• Various bugfixes and minor changes, see knowledge base for details

November 28th 2011 - Version 9.1.5.1899/1900

• New: [WebGUI] Sensor cross reference is now available "by tag" and "by type"
• New: [Core] You can now create Active Directory groups with read-only users (only applies to new user accounts)
• Changed: [Maps] Map object „sizeable status icon on status related background” now works for all object types (probes, groups, devices, and sensors)
• Various bugfixes, see knowledge base for details

November 23rd 2011 - Version 9.1.4.1883/1884

• New: [Maps] You can now select a background color for a map
• New: [EC] One-click install of new software version if a core server runs a different version of the PRTG
• Changed: [Sensors] HTTP SSL Certificate sensor now uses proxy setting of device
• Changed: [Sensors] HTTP Advanced sensor now has a User Agent String setting
• Changed: [Sensors] Improved SQL sensors
• More changes and bugfixes, see knowledge base for details

November 15th 2011 - Version 9.1.4.1839/1840

• Improved: [Maps] All map objects can now have an associated link, you can either enter an external link or select a device tree object or a another map as link
• Improved: [Sensors] Improved connection handling for all WMI sensors, especially for WMI overload situations or whenever a target computer was rebooted
• Improved: [Sensors] Rewrite of the INI file sensor for improved connection handling and better rights management (you must create new INI file sensors to use the new engine, existing sensors stay untouched)
• Various improvements, changes and bugfixes, see knowledge base for details

October 20th 2011 - Version 9.1.3.1792/1793

• New: [Enterprise Console] Various improvements (speed and usability)
• New: [WebGUI] Redesigned startup screen
• New: [WebGUI] Alarmsound in browsers does not require Quicktime any more
• New: [Core] Active Directory integration now supports Universal Groups
• Various bugfixes, see knowledge base for details

October 11th 2011 - Version 9.1.2.1717/1718

• New: [Sensors] SNMP Traffic sensors can now use the “ifDescr” field as port identification (this is a new device setting)
• Various bugfixes, see knowledge base for details

October 6th 2011 - Version 9.1.1.1687/1688

• New: [Sensors] New sensor type “Windows Scheduled Task”
• New: [Maps] New map object resizable colored icon, see knowledge base
• Various bugfixes, see knowledge base for details

September 30th 2011 - Version 9.1.1.1644/1645

• Various bugfixes, see knowledge base for details

September 19th 2011 - Version 9.1.0.1527/1528 - New Major Version

Initial release of new major version 9. For detailed feature descriptions, please see the list below and look at blog article "What’s Cool in PRTG 9 - The CEO's Personal Top 10 List". See also PRTG 9 Manual: Update From Previous Versions to V9.

What's New in PRTG Network Monitor 9?

With PRTG version 9, we introduce a lot of new features that will bring network monitoring to a new level. Many of the new features are a response to requests from our user community, and there are some more cool features which we are sure you will love.