Event ID - 9176

Event Id9176
Description"NSPI Proxy can contact Global Catalog %1 but it does not support the NSPI service. After a Domain Controller is promoted to a Global Catalog, the Global Catalog must be rebooted to support MAPI Clients. Reboot %2 as soon as possible. "
Event InformationAccording to Microsoft:

This Event indicates that the Exchange Server was able to contact a server that is designated to be a Global Catalog (GC) Server but did not get a response from the NSPI interface on that GC.
This can happen because the Name Service Provider Interface (NSPI) interface is not advertised by the Global Catalog server, possibly because the server was made a Global Catalog and was not restarted.
User Action :
After a Domain Controller (DC) is made a GC, the GC must be rebooted to support MAPI clients. To ensure that a GC responds to NSPI queries, restart the GC.
Reference LinksMove Mailbox operation is unsuccessful and an Event ID 9175 message with the Error ID 80040111-0286-00000000 is logged

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