Hi @Borislav Vitanov ,
Is there a issue with any Exchange functions?
According to the event information, this seems to be a event related to the database, please try to restart the Microsoft Exchange Search service.
In addition, only this event log is difficult to determine the cause of the warning event, is there have any other related event log in the Event View? If so, please share with us, please pay attention to covering the personal information.
----------
If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.