Looks like Microsoft broke everything
Same error when trying to convert user mailbox to shared mailbox, when edit Aliases in user mailbox.
All work has stopped.
Error executing request. 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: Exception happened when doing AAD dual-write. For more details, please check RemoteException if using RPS client or innerException otherwise. RequestId : da43aad9-bde9-47ae-a976-40009cf66134 The issue may be transient and please retry a couple of minutes later. If issue persists, please see exception members for more information.
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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: Exception happened when doing AAD dual-write. For more details, please check RemoteException if using RPS client or innerException otherwise. RequestId : 5596039b-0644-47e0-9d65-99ce48ffb2ba The issue may be transient and please retry a couple of minutes later. If issue persists, please see exception members for more information.
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