Exchange on-lineGroup created in teams after ADsync was started on-premise. It was a private team setup.After mail migration, Exchange O365 group was created, made public and I am a memberSet-UnifiedGroup -Id "O365 Group" -HiddenFromAddressListsEnabled $false was runWARNING: The command completed successfully but no settings of'O365 Group_*****************-****-*******' have been modified.This leads me to believe that the group should be visible in GAL.I can find and add the group, with a successful join reported by Outlook.When I close and reopen Outlook the group is gone.This is not happening with Groups created in Exchange after migration. Help, please.

Try removing and readding yourself as a member from the group via admin center, then try the join again via outlook.

Copper Contributor

Aug 04, 2020

Solved

O365 Group keeps disappearing from outlook

Exchange on-line

Group created in teams after ADsync was started on-premise. It was a private team setup.
After mail migration, Exchange O365 group was created, made public and I am a member
Set-UnifiedGroup -Id "O365 Group" -HiddenFromAddressListsEnabled $false was run
WARNING: The command completed successfully but no settings of
'O365 Group_*****************-****-*******' have been modified.
This leads me to believe that the group should be visible in GAL.
I can find and add the group, with a successful join reported by Outlook.
When I close and reopen Outlook the group is gone.

This is not happening with Groups created in Exchange after migration. Help, please.

harveer singh
Aug 04, 2020
Try removing and readding yourself as a member from the group via admin center, then try the join again via outlook.