{"id":18042,"date":"2026-08-25T06:01:34","date_gmt":"2026-08-24T21:01:34","guid":{"rendered":"https:\/\/m365jp.net\/?p=18042"},"modified":"2026-08-25T06:05:09","modified_gmt":"2026-08-24T21:05:09","slug":"servicerestored-ex1442215-exchange-online-admins-are-unable-to-complete-some-cross-tenant-mailbox-migrations-in-exchange-online","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-08-25-servicerestored-ex1442215-exchange-online-admins-are-unable-to-complete-some-cross-tenant-mailbox-migrations-in-exchange-online","title":{"rendered":"[serviceRestored] EX1442215 | Exchange Online | Admins are unable to complete some cross-tenant mailbox migrations in Exchange Online"},"content":{"rendered":"
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EX1442215 | Exchange Online | Admins are unable to complete some cross-tenant 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>\nserviceRestored<\/td>\n<\/tr>\n
Classification<\/th>\nadvisory<\/td>\n<\/tr>\n
User Impact<\/th>\nAdmins may have been unable to perform tenant to tenant migrations and offboarding moves in the Exchange admin center.<\/td>\n<\/tr>\n
Last Updated<\/th>\n08\/24\/2026 20:37:41<\/td>\n<\/tr>\n
Start Time<\/th>\n02\/14\/2026 00:48:00<\/td>\n<\/tr>\n
End Time<\/th>\n08\/24\/2026 20:35:37<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Admins are unable to complete some cross-tenant mailbox migrations in Exchange Online <\/p>\n

User impact: Admins may have been unable to perform tenant to tenant migrations and offboarding moves in the Exchange admin center. <\/p>\n

More info: While we worked on developing a long-term solution, admins may have been able to use PowerShell for the affected migrations and moves with the following cmdlet against the affected mailboxes:<\/p>\n

Set-MoveRequest “user@yourdomain.com&quot<\/a>; -SkipMoving FolderRestrictions<\/p>\n

Next, the tenant admin could have resumed the move request using the cmdlet:
Resume-MoveRequest “user@yourdomain.com&quot<\/a>;<\/p>\n

This would allow the affected move jobs to continue to make progress. <\/p>\n

Final status: We confirmed that the cross-tenant migration process has successfully completed for a subset of affected admins, validating that our configuration change has resolved the event. <\/p>\n

Scope of impact: Some admins attempting to perform tenant to tenant migrations and offboarding moves in the Exchange admin center may have been impacted. <\/p>\n

Start time: Saturday, February 14, 2026, at 12:48 AM UTC <\/p>\n

End time: Friday, August 14, 2026, at 5:24 PM UTC <\/p>\n

Root cause: A change introduced a code regression to Mailbox Replication Service (MRS) caused intermittent failures for tenant-to-tenant migration actions or offboarding moves as the property tags needed to complete the request were not being properly configured. <\/p>\n

Next steps: – We’re reviewing the responsible change to better understand what led to the configuration error that resulted in impact and prevent similar future occurrences. <\/p>\n

This is the final update for the event.<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb:\u7ba1\u7406\u8005\u304cExchange Online\u3067\u4e00\u90e8\u306e\u30c6\u30ca\u30f3\u30c8\u9593\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u79fb\u884c\u3092\u5b8c\u4e86\u3067\u304d\u307e\u305b\u3093 <\/p>\n

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Set-MoveRequest “user@yourdomain.com&quot<\/a>; – SkipMoving FolderRestrictions<\/p>\n

\u6b21\u306b\u3001\u30c6\u30ca\u30f3\u30c8\u7ba1\u7406\u8005\u306f\u30b3\u30de\u30f3\u30c9\u30ec\u30c3\u30c8\u3092\u4f7f\u3063\u3066\u79fb\u52d5\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u518d\u958b\u3067\u304d\u305f\u306f\u305a\u3067\u3059:
\u5c65\u6b74\u66f8-\u79fb\u52d5\u30ea\u30af\u30a8\u30b9\u30c8\u300cuser@yourdomain.com\u300d<\/a><\/p>\n

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\u958b\u59cb\u6642\u9593:2026\u5e742\u670814\u65e5\u571f\u66dc\u65e5 0:48 UTC <\/p>\n

\u7d42\u4e86\u6642\u523b:2026\u5e748\u670814\u65e5\u91d1\u66dc\u65e5 17:24 UTC <\/p>\n

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EX1442215 | Exchange Online | Admins are unable to complete some cross-tenant mailbox migrations in Exchange O […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-18042","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/18042","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/comments?post=18042"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/18042\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=18042"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=18042"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=18042"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}