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Dec 06 2023, 07:00 AM - 12:00 PM (PST)
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Unable to create alias on Shared Mailbox in O365 after hybrid join

Copper Contributor


Looking for the best practice on how to add alias, before joining to hybrid I could add alias for single or shared account in O365/Exchange online but after hybrid join, I can't see a way to add alias for shared account in O365. Each time I add alias for shared account in O365/Exchange i gets a error says  "We couldn't save your changes. Please try again."

If I would like to add alias for user account, I cannot do it via the O365/Exchange online, I have to go to local AD>User>user attribute>Proxy address> smtp:email address removed for privacy reasons that's how I can get alias for user accounts


I can create new users or shared account and add alias to them but can't do with already existed shared account. 


My environment: 

  • One AD Forest with One Domain (local)
  • 1 O365 Tenant with 25 domains


There isn't on-premise Exchange server. Does anyone have any suggestions on how to add an alias to shared account in o365 if we have Hybrid join.? 

Many thanks

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