{"id":14803,"date":"2026-02-04T04:00:53","date_gmt":"2026-02-03T19:00:53","guid":{"rendered":"https:\/\/m365jp.net\/?p=14803"},"modified":"2026-02-04T04:06:56","modified_gmt":"2026-02-03T19:06:56","slug":"servicedegradation-ex1225888-exchange-online-admins-may-be-unable-to-complete-mailbox-migrations-in-exchange-online-5","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-02-04-servicedegradation-ex1225888-exchange-online-admins-may-be-unable-to-complete-mailbox-migrations-in-exchange-online-5","title":{"rendered":"[serviceDegradation] EX1225888 | Exchange Online | Admins may be unable to complete mailbox migrations in Exchange Online"},"content":{"rendered":"
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EX1225888 | Exchange Online | Admins may be unable to complete mailbox migrations in Exchange Online<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n\n\n\n\n\n\n\n\n\n\n
Status<\/th>\nserviceDegradation<\/td>\n<\/tr>\n
Classification<\/th>\nadvisory<\/td>\n<\/tr>\n
User Impact<\/th>\nAdmins may be unable to complete mailbox migrations in Exchange Online.<\/td>\n<\/tr>\n
Last Updated<\/th>\n02\/03\/2026 18:30:17<\/td>\n<\/tr>\n
Start Time<\/th>\n02\/02\/2026 04:52:11<\/td>\n<\/tr>\n
End Time<\/th>\n<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Admins may be unable to complete mailbox migrations in Exchange Online<\/p>\n

User impact: Admins may be unable to complete mailbox migrations in Exchange Online.<\/p>\n

More info: This issue only affects multi-geo tenants.<\/p>\n

Current status: We\u2019ve confirmed that the configuration change to the migration mailbox and system mailbox locations didn\u2019t remediate the issue. We\u2019re investigating to determine alternative mitigation options and to better understand the underlying cause.<\/p>\n

Scope of impact: Multi-geo admins may be unable to complete mailbox migrations in Exchange Online. This information may be updated as our investigation continues.<\/p>\n

Root cause: A recent service configuration change, intended to optimize how requests are routed within the service, is resulting in impact.<\/p>\n

Next update by: Wednesday, February 4, 2026, at 7:00 PM UTC<\/td>\n<\/tr>\n

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