Cannot join/ see Office 365 Groups in Outlook 365

-
This might be happen either if an Azure AD Account is corrupted or it was incorrectly migrated during Azure AD Sync.

If the user can access or see the Unified Group, you have to manually remove and re-add the account to the group.

The error message, if a user try to add/ join the group is:
Your request could not be sent. Please try again later.




Comments

Post a Comment

Popular posts from this blog

How to hide users from GAL if they are AD Connect synchronized

-
Image
How to hide and un-hide users from Global Address List (GAL) in Exchange Online if they are AD Connect synchronized Hiding User from GAL isn't possible if those are synchronized form On-Premises Active Directory. The local AD is the leading system for all important attributes, like SMTP, UPN and hiding from GAL. Especially during a cross-tenant migration, you do not want to see not migrated user in the GAL. Those User aren't actively working until their cut-over day. Since the Exchange Online attribute  msExchHideFromAddressList s is an AD on-premises parameter, we have two possible ways hiding user in BME from GAL.   Modify the AD Connect for your teant with a custom rule, by using a extensionAttribute to set the HidefromGAL. In this rule, for users which have an entry in the extensionAttribute, hiding / un-hiding will be controlled by AD Connect This is the best option for Cross-Tenant Migration, if you run 2 or more AD Connect system We direct modif...
Read more

Exchange x500 address x500:/o=ExchangeLabs

-
Image
 You have Exchange Hybrid in place. Now you wonder about an address with you see on-premises with all users. This address has the following format: x500:/o=ExchangeLabs/ou=Exchange Administrative Group (FYDIBOxxxxxx)/cn=Recipients/cn=234xxxx This address is now found in the Exchange proxyAddresses in On-Premises as well as in Entra ID. Additionally you will see them in msExchShadowProxyAddresses The ExchangeLabs is Microsoft internal Exchange Online Organization and therefore needed. This x500 address is created in Exchange Online and sync'ed via Azure AD Connect (Entra ID Connect) back on-premises. If you delete this address on-premises, the connection between will sync this Cloud leading attribute back to on-premisses. If you have multiple Domains and Active Directories connected to your Tenant, this x500 address from your tenant will be added to ALL users. Also to users which are from an local AD without Exchange / Exchange Hybrid. As long AAD Connect/ Entra ID Connect will...
Read more

MS Teams unknown User @invalid.teams.ms

-
This is an know bug within Teams. This issue is happening on desktop and mobile version only, if you had installed the Teams app before and changed / created a new Microsoft M365 Tenant with the same user name (UPN/ SIP) Solution: Uninstall Teams App Delete all Teams references and folders Reinstall Teams App Login normally
Read more