Unable to create alias in Office 365

%3CLINGO-SUB%20id%3D%22lingo-sub-2370050%22%20slang%3D%22en-US%22%3EUnable%20to%20create%20alias%20in%20Office%20365%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2370050%22%20slang%3D%22en-US%22%3E%3CP%3EHello%2C%3C%2FP%3E%3CP%3EI%20deleted%20an%20Office%20365%20user%20more%20than%2030%20days%20ago%2C%20and%20Today%20I%20wasn't%20able%20to%20create%20his%20email%20as%20alias%20for%20existing%20user%20with%20the%20following%20error%3A%3C%2FP%3E%3CP%3E%3CFONT%20color%3D%22%23FF0000%22%3EAn%20Azure%20Active%20Directory%20call%20was%20made%20to%20keep%20object%20in%20sync%20between%20Azure%20Active%20Directory%20and%20Exchange%20Online.%20However%2C%20it%20failed.%20Detailed%20error%20message%3A%20Another%20object%20with%20the%20same%20value%20for%20property%20EmailAddresses%20already%20exists.%20RequestId%20%3A%200c0e19f1-36f0-4ee0-9932-f2e5079eefcf%20The%20issue%20may%20be%20transient%20and%20please%20retry%20a%20couple%20of%20minutes%20later.%20If%20issue%20persists%2C%20please%20see%20exception%20members%20for%20more%20information.%3C%2FFONT%3E%3C%2FP%3E%3CP%3E%3CFONT%20color%3D%22%23000000%22%3EI%20did%20search%20for%20the%20old%20object%20as%20mailbox%2Fcontact%2Fgroup%20using%20Admin%20Center%2FConnect-EXOPSSession%2FConnect-AzureAD%20%2FConnect-MsolService%20in%20PowerShell%20with%20no%20success%2C%20Also%20I%20contacted%26nbsp%3B%40AzureSupport%20%2F%26nbsp%3B%40MicrosoftHelps%20and%20they%20point%20me%20to%20start%20this%20discussion%2C%20Hopefully%20I%20can%20find%20the%20solution%20here%3C%2FFONT%3E%3C%2FP%3E%3CP%3E%3CFONT%20color%3D%22%23000000%22%3ERegards%3C%2FFONT%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-LABS%20id%3D%22lingo-labs-2370050%22%20slang%3D%22en-US%22%3E%3CLINGO-LABEL%3EOffice%20365%3C%2FLINGO-LABEL%3E%3C%2FLINGO-LABS%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2370983%22%20slang%3D%22en-US%22%3ERe%3A%20Unable%20to%20create%20alias%20in%20Office%20365%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2370983%22%20slang%3D%22en-US%22%3EUse%20the%20Get-Recipient%20cmdlet%20to%20find%20the%20matching%20object%3A%3CBR%20%2F%3E%3CBR%20%2F%3EGet-Recipient%20email%40domain.com%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2371148%22%20slang%3D%22en-US%22%3ERe%3A%20Unable%20to%20create%20alias%20in%20Office%20365%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2371148%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F58%22%20target%3D%22_blank%22%3E%40Vasil%20Michev%3C%2FA%3E%26nbsp%3B%3C%2FP%3E%3CP%3EHello%20Dear%2C%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EThis%20is%20what%20I%20got%20as%20response%3A%3C%2FP%3E%3CP%3E%3CFONT%20color%3D%22%23FF0000%22%3EThe%20operation%20couldn't%20be%20performed%20because%20object%20'email%40domain.com'%20couldn't%20be%20found%20on...%3C%2FFONT%3E%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%3CFONT%20color%3D%22%23000000%22%3EI%20even%20tried%3A%20Get-Recipient%20%3CA%20href%3D%22mailto%3Aemail%40domain.onmicrosoft.com%22%20target%3D%22_blank%22%20rel%3D%22nofollow%20noopener%20noreferrer%22%3Eemail%40domain.onmicrosoft.com%3C%2FA%3E%26nbsp%3Bwith%20no%20success%3C%2FFONT%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2372361%22%20slang%3D%22en-US%22%3ERe%3A%20Unable%20to%20create%20alias%20in%20Office%20365%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2372361%22%20slang%3D%22en-US%22%3EBack%20to%20support%20then%2C%20as%20that's%20most%20likely%20an%20issue%20on%20the%20backend.%3C%2FLINGO-BODY%3E
New Contributor

Hello,

I deleted an Office 365 user more than 30 days ago, and Today I wasn't able to create his email as alias for existing user with the following error:

An Azure Active Directory call was made to keep object in sync between Azure Active Directory and Exchange Online. However, it failed. Detailed error message: Another object with the same value for property EmailAddresses already exists. RequestId : 0c0e19f1-36f0-4ee0-9932-f2e5079eefcf The issue may be transient and please retry a couple of minutes later. If issue persists, please see exception members for more information.

I did search for the old object as mailbox/contact/group using Admin Center/Connect-EXOPSSession/Connect-AzureAD /Connect-MsolService in PowerShell with no success, Also I contacted @AzureSupport / @MicrosoftHelps and they point me to start this discussion, Hopefully I can find the solution here

Regards

4 Replies
Use the Get-Recipient cmdlet to find the matching object:

Get-Recipient email@domain.com

@Vasil Michev 

Hello Dear,

 

This is what I got as response:

The operation couldn't be performed because object 'email@domain.com' couldn't be found on...

 

I even tried: Get-Recipient email@domain.onmicrosoft.com with no success

Back to support then, as that's most likely an issue on the backend.

@Vasil Michev 

Hello thats not right, proxyaddresses at the local AD is the right way. And thats why u get them is the azure AD Sync is active. Greetz