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Titre
Migrating Group mailbox is failing with error: "The remote server returned an error: (403) Forbidden. (The request failed. The remote server returned an error: (403) Forbidden.)" -
Description
When trying to migrate a Group mailbox for Teams or M365 Group, it is failing with error: "The remote server returned an error: (403) Forbidden. (The request failed. The remote server returned an error: (403) Forbidden.)" when temporary migration account is used.
Note: the issue can also happen with the cloud-only tenant, where service account was created through Microsoft PIM -
Cause
The issue was caused by Application Access Policy or Conditional Access Policy. -
Résolution
Add the temporary migration account (or account which granted consent) to the application/conditional access policy to avoid the error.
For other type of mailboxes please see another knowledge base. -
Informations supplémentaires
More details about temporary migration account can be found: https://support.quest.com/technical-documents/on-demand-migration/current/user-guide/20#TOPIC-1661360