Hi, @Tom Cruise
It sounds like you are dealing with a complex Exchange and Office 365 hybrid environment. As a result, troubleshooting can be painful and time-consuming.
Here are some suggestions for you:
1.You can remove traces for Exch00 through ADSI edit, similar to how you would remove other failed Exchange servers. However, you need to be very cautious because of the Office 365 hybrid setup. Specifically:
-Ensure that all necessary data and configurations have been moved or copied to Exch01.
-Verify that any connector, mail flow, and AD attributes related to the hybrid setup do not depend on Exch00.
2.In Exchange, arbitration mailboxes are used to manage approval workflows and are typically not set up separately for equipment mailboxes and room mailboxes. It is recommended that you prioritize updating the Exchange topology information to detect whether the problem is resolved. If the issue is not resolved, it may be that the arbitration mailbox is causing the problem with the equipment mailbox, at which point you can recreate it.
3.The problem of Outlook constantly prompting for password can be caused by several factors:
-Clear the cache. Old cached credentials can cause conflicts.
-Outlook profile is corrupted. Sometimes creating a new profile may work.
-DNS and network connectivity. Confirm that the DNS records are updated and there are no delays.
-Autodiscover issues. Ensure that the Autodiscover service is configured correctly and points to the correct server.
-Considering that it works regardless of whether you enter the password or not, it is also possible that there is a problem with the software itself, and you can monitor whether the software will fix itself later.
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