Forum Discussion
Groups disappeared in Outlook?
Hi all,
As of late, my o365 groups are no longer visible in Outlook. If I use o365 via the web, they are accessible without issue.
No one else in any of my teams are experiencing this issue. We all run 2016 Pro Plus and connect to o365 Gov. I just attempted an Office repair to no avail. Will proceed with a reinstall next, but fear that won't help anything.
Any help would be most appreciated.
Thanks!
16 Replies
- This is an old thread but I just struggled with this and ended up contacting Microsoft Support after nothing I tried worked. It turns out that there is an attribute that controls whether or not the group is hidden from Exchange Clients. This sequence of PowerShell commands fixed it for me for this specific group. You will have to set each group's HiddenFromExchangeClientsEnabled attribute to false to see them all.
PS C:\> Install-Module -Name ExchangeOnlineManagement
PS C:\> Import-Module ExchangeOnlineManagement
PS C:\> Connect-ExchangeOnline -Credential $UserCredential
PS C:\> Get-UnifiedGroup -Identity "Support" | fl HiddenFromExchangeClientsEnabled
HiddenFromExchangeClientsEnabled : True
PS C:\> Set-UnifiedGroup -Identity "Support" -HiddenFromExchangeClientsEnabled:$false
PS C:\> Get-UnifiedGroup -Identity "Support" | fl HiddenFromExchangeClientsEnabled
HiddenFromExchangeClientsEnabled : False- This was the ticket here. Thanks, VinhQNguyen!
- This might explain the background as to why some groups are hidden from Exchange clients: https://office365itpros.com/2021/07/08/how-hide-teams-enabled-groups-from-exchange-online/
- Thanks for the clarification. It took me two weeks to get that out of MS support (mostly due to scheduling conflicts). Thank you for taking the time to post the explanation. It's very much appreciated. I'm sure many others will benefit from it or, at the very least, save a few hairs.
adambean This happened to me just now after I disabled caching to perform a test. I noticed once cache mode was off the groups disappeared. I tried to restore it by reenabling the caching with full option chosen but it did not return. I then changed the setting to one year and the groups returned. I then dragged the slider to all and it stayed there.
I think there is a bug when you reenable it that isnt turning it back on but this seemed to fix it up.
- Re-enabling cached exchange mode worked for me as well. I set it to 3 days.
Groups apparently disappeared at some point after I had disabled CEM.
Thanks!
Group functionality in Outlook relies heavily on Autodiscover, so I'd focus my troubleshooting on that front.
- Thanks Vasil, can you provide any additional context?
Thank youNot sure what context you need. Like with many other functionalities, Outlook uses Autodiscover to fetch a list of Groups for the tenant, so you should focus on verifying that everything is working as expected with Autodiscover as the first troubleshooting step.
