Hi Bilsey, Thank you for posting your query on Microsoft community. Please provide more information before we proceed. -Are you also using Lync or Office Communicator? If yes, try end the UCMAPI.EXE in the Task Manager when problem occurs, see if this help. Also, try to start Outlook in safe mode to check the issue, see if this could be caused by add-ins. * Hold Windows key + R. * Copy and …
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