If you recently installed Windows Updates KB5014702; KB5014692; KB5014754; KB5014699 & KB50004442 you might be affected by hardening changes. Microsoft recently rolled out a patch which hardens the DCOM authentication, which can cause authentication login attempts to fail.
In our experience the issue should be fixed if all updates are installed on PRTG server as well as on the target device. Please ensure that all servers are on the same patch level and reboot your PRTG Server afterwards.
If you are still facing this issue even though all servers are on the same patch level, feel free to reach out to us directly via mail at [email protected] so we can take a closer look.
Alternatively as a workaround you can try to roll back the update or remove the registry entry as described here. As workaround you can also use this article to disable the hardening changes again.
Add comment