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Azure AD Connect - procedure to change source of anchor from ObjectSID to Ms-DS-ConsistencyGUID
Hello, We are an organization of + 1000 users with ADs (domain and subdomains) linked to Azure AD via Azure Ad Connect. Currently the anchor source is ObjectSID, UPN = mail and Hybrid Exchange. ...
The sourceAnchor attribute value cannot be changed after the object has been created in Azure AD and the identity is synchronized.
The sourceAnchor attribute can only be set during initial installation. If you rerun the installation wizard, this option is read-only. If you need to change this setting, then you must uninstall and reinstall. If the value for sourceAnchor is changed after the object has been exported to Azure AD, then Azure AD Connect sync throws an error and does not allow any more changes on that object before the issue has been fixed and the sourceAnchor is changed back in the source directory.
Please refer to MSDocument for details.