Outlook 15.37 (170815): Unwanted account expands in sidebar every start of Outlook


I’m using Outlook 15.37 (170815) under macOS Sierra 10.12.6 on a MacBook Pro Retina, 15", Mid 2015. 7 accounts have been set up: 2 Exchange (one of them is my Office 365-account) and 5 POP-accounts from my ISP. One of these POP-accounts is specified as "Standard":

Until the last update [15.37 (170815)] only "On my Computer" in the sidebar expanded every time Outlook was opened. Since the last update my Office 365-account ("Onmicrosoft") expands too and I have to close it manually. See below.

How can I revert to the previous behavior?



Before Update:

After Update:


Hello Manfred,

Based on my test, there is always one email account expanded when you have multiple accounts in current version of Outlook. I know that might be inconvenience when you checking emails. Please submit feedback about this behavior if that is important to you.


Thank you for your understanding.

Best Regards,


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Question Info

Last updated May 22, 2018 Views 61 Applies to: