I have received a few notes that outlook isn't closing properly and only after a reboot it is possible to re-open outlook. A day after, I noticed the same thing on my computer. So basically, what I found out is, that after closing Outlook, the process isn't shutting down properly, and in the notification tray appears the typical grey outlook symbol called "Outlook is closing". But it won't close until you kill the process.

Now I read a few threads in different forums, where people had the same issue in older Office versions, but none is really identical to mine. So I'm stuck right now... anyone any advice?

OS: Windows 10 Pro, 64-bit

Office: 365 (Outlook 2016)

Add-Ins: Zimbra Connector, Agile PLM but disabled(!)

Thanks for all help!

  • Some add-in or program that integrated into Outlook and uses Outlook data may be the cause. – Steve Fan Jun 5 '18 at 2:05

This issue is mostly caused by add-ins. Try to run Outlook in safe mode first: outlook.exe /safe. If this mode allows it to exit properly, then disable your add-ins one by one to find the falty one. After that contact the add-in's developer.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.