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Make sure you Connected to Exchange Online PowerShell To check Unified Group Members – Add Members to Unified Group via CSV – CSV Sample – Double quotes is very important otherwise you many see undesirable adds. You can always use -WhatIf if you want to verify before applying Import-Csv .\usersupn.csv …

You need option 60 in DHCP serve inorder to run sccm task sequence to do the imaging process for windows. if you don’t see the option 60 on the dhcp server you need to add them manually. To add Option 60 From the command line on the DHCP server,  

After migrating mailboxes to exchange 2019 from exchange 2016 . Most of the mailboxes went to quarantine all of a sudden and databases went to dismount state and came back to mount state. We couldn’t bring the databases to a stable state. We realized its a bug in exchange 2019. …

Solution – Make sure all Domain Controllers are reachable. Remove any orphaned domain controllers. Try running on domain controller itself holding the schema master.  

Hybrid Modern Authentication (HMA) for Exchange On-Premises is being there for while which has a amazing set of features to integrate your endpoint logins to terminate in Azure AD directly. Azure AD will give a clear indication on the health of your identity and a clear visibility giving you access …

Solution –  Make sure Outlook Anywhere succeeds with test account. Make sure you enter the credentials with domain\username in all locations while creating endpoint. Make sure internal and External host name is in the certificate (In a strange case user ad multi domain wild card cert were we move internal …