What should you do first?

Your company has a Microsoft Exchange Server 2019 hybrid deployment.

You are migrating mailboxes to Exchange Online by using remote mailbox move requests.

A recent security breach at the company required that the passwords of all privileged accounts be changed.

Since the password change, mailbox move requests are failing.

You need to ensure that the mailbox migration can resume.

What should you do first?
A . From Exchange on-premises, run Set-MigrationEndpoint.
B . From Exchange on-premises, run Set-MigrationConfig.
C . From Exchange Online, run Set-MigrationConfig.
D . From Exchange Online, run Set-MigrationEndpoint.
E . Run iisreset /noforce on all the Exchange servers that have MRSProxy enabled.

Answer: A

Explanation:

Reference: https://docs.microsoft.com/en-us/powershell/module/exchange/move-and-migration/set-migrationendpoint?view=exchange-ps