As Exchange administrator, did you ever seen event error log Event ID 4113: Unexpected Error When calling the Microsoft Exchange Active Directory Topology service on server? Event is repeated every 15 minutes, but everything works without problems. You must agree, the problem is totally weird and creating unnecessary anxiety. Especially when you find how to fix the problem.
How to solve problem? Just need to re-open Exchange PowerShell command line window as Administrator elevation 🙂