@SergejKipnis the problem seems to be in the Logwatch-Plugin, because the last log-entry cannot be found in Temp-Files in C:\ProgramData\checkmk\agent\state\logwatch-batches\__ffff_[IPAddress] folder. If you add another message to the log (it doesn’t matter if it is configured as a pattern hit or not) and Reschedule check, a file with the log entry appears in the directory and checkmk-GUI.