We just released PRTG version 26.2.120 to the stable release channel, and it comes with a lot to talk about. Three new sensors graduate from BETA or join the lineup for the first time, a brand-new AI chatbot lands in the New UI, and a range of security hardening measures, server improvements, and sensor fixes round out this release.
Here are the highlights:
The SNMP Custom String v2 sensor leaves its BETA status with this release. First introduced as an experimental sensor in PRTG version 26.1.116, it monitors a string returned by a specific Object Identifier (OID) via SNMP and interprets the value as a string, a MAC address, or an IPv4 address.
New in this version is the Numeric Extraction setting, which uses regular expressions to locate numbers inside a string and displays the result in a dedicated Extracted Number channel. Please note that the primary channel has changed from Response Time to String Found - to get the new primary channel, you need to recreate the sensor.
The new SNMP Printer v2 sensor lets you monitor printer status, consumables, and operational metrics via SNMP. It supports both IPv4 and IPv6. Depending on the monitored printer, the sensor creates channels for Total Pages Printed, Cover Status, Tray Status, and Supply Status. The sensor message displays the printer console output directly. If no printers are defined in the device table, the sensor will report an error.
The SNMP RMON v2 sensor is a fully rewritten version of the classic SNMP RMON sensor, and it now works on the Multi-Platform Probe as well. It monitors traffic on a device using the Remote Monitoring (RMON) standard via SNMP.
PRTG now has its own AI chatbot. Meet MAX. Available on the Welcome Page in the New UI, MAX has in-depth knowledge of PRTG and is ready to help with questions and troubleshooting right from within the interface. A click on the Start Chatting button opens a slide-in panel on the right side of the page where you can interact with MAX directly.
This release includes several server-side fixes:
On the features side, we are introducing the PRTG Installation Report, a new built-in report available out of the box under the Reports menu. It gives you a comprehensive overview of your PRTG installation, including license details, system health metrics, and optimization recommendations. You can generate it on demand or schedule it for automatic delivery, and it is available in PDF, CSV, and HTML formats.
The Microsoft 365 Mailbox sensor now supports the Validate Latest Email setting, consistent with the IMAP sensor. You can filter messages and evaluate the most recent email based on its Subject, From, or Body content, and set the sensor to a Down or Warning state depending on the age of the latest email.
The Ping v2 sensor received two notable updates. We resolved an issue where multiple ping sensors targeting the same host caused raw ICMP sockets to receive all responses indiscriminately, leading to unexpected identifier or sequence number errors and false packet loss reporting. We also added a new Error Status Handling setting that lets you define how negative results are evaluated. By default, the sensor will switch to a Down status immediately based on channel lookups.
The DNS v2 sensor received a range of reliability improvements: null MX records are now correctly shown as 0 for domains that do not accept emails, DNS records of the same type are sorted alphanumerically for consistent results, and record values are trimmed before filter matching to avoid whitespace-related issues. A new Match the full result exactly filter mode has been added for record types whose values contain commas, such as TXT and NAPTR.
We also addressed several sensor-specific fixes:
The Device Tree in the New UI now lets you move devices between groups and reorder objects within a parent. Active monitoring objects get full-row highlighting, and the context menu has been expanded with Copy, Paste, and Reorder Tree actions, including clear permission indicators when access is restricted.
On the fixes side, Channel Unit Configuration now correctly displays units for Disk, File, and Memory sizes. A ghost Add Sensor button that appeared during Device Tree searches has been removed, object calculations for groups with no sensors now work correctly, and a sporadic "Something went wrong" session error tied to iframe-based pages has been resolved.
We also refined the PRTG Home Page to better match the type of user that is logged in, both in wording and in the display of content.
The metascan endpoint /experimental/{id}/metascan now supports parameter input via a request body, which allows the NetApp System Health sensor to be triggered via URL parameters and created through a POST request. The sensor creation endpoints have also been expanded to support all sensor kinds. The previous whitelist restriction has been removed, so you can now create any sensor type without limitations.
On the fixes side, the api/v2/settings/public endpoint now correctly returns the configured language instead of always defaulting to en-US.
In summary, PRTG 26.2.120 includes 154 resolved issues, with 4 implemented features, 13 stories, 49 bug fixes, 49 completed tasks and sub-tasks, and 32 finished documentation tickets. For all the details, take a look at our release notes page.
We also offer a public roadmap of PRTG on our website, which we update regularly. There you can read which features we are currently working on and what we plan to implement in PRTG in the future.