Sync users error

Question

Hello,

We have a problem with our synchronization of users with Azure Connect.

Scenario:

2 years ago we had setup a test environment with Office 365, synced the users and had setup the Exchange Hybrid. We quitted the AD sync by turning of the server and on Office 365 we stopped the Exchange Hybrid because of problems with mail flow. Now we use SharePoint and Onedrive so the users cant be deleted.

**Problem:**Overwriting the users is not possible because they are corrupted with the mail account. We try to rename the users so we can sync the users again to get new users. When we rename the UPN, proxyaddress and ImmutableID but we get an error:

Unable to update this object because the following attributes associated with this object have values that may already be associated with another object in your local directory services: [OnPremiseSecurityIdentifier System.Byte[];].  Correct or remove the duplicate values in your local directory.

If I look with powershell in AzureAD no user has the ImmutableID which is in the error message.

Question:

Why do I get the error message and how can I resolve it?

I hope there is a way, else we have to delete all users witch are production users in SharePoint.

Thank in forward and greetings,

Jasper

Answer 1

Hi Jasper,

Can you provide the information I asked for at your convenience?

Best Regards,

Erick