What detailed version of Outlook are you using? Please make sure that you have upgraded it to the latest version (File > Office Account Update Now).Please refer to this article: How to perform a clean boot in Windows. If the issue only occurs with this computer, to check if the issue is caused by any other program on your computer, reboot your computer with clean boot. Does the issue only exist on this specific device? Can this problem be reproduced in other clients?.In order to better understand your problem, could you provide some detailed information: Please understand that in order to protect your privacy, I have hidden personal information.
