{"id":17431,"date":"2026-07-23T01:03:02","date_gmt":"2026-07-22T16:03:02","guid":{"rendered":"https:\/\/m365jp.net\/?p=17431"},"modified":"2026-07-23T01:07:25","modified_gmt":"2026-07-22T16:07:25","slug":"servicerestored-ex1428537-exchange-online-some-users-may-be-unable-to-view-mailbox-storage-data-in-outlook-and-outlook-on-the-web","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-07-23-servicerestored-ex1428537-exchange-online-some-users-may-be-unable-to-view-mailbox-storage-data-in-outlook-and-outlook-on-the-web","title":{"rendered":"[serviceRestored] EX1428537 | Exchange Online | Some users may be unable to view mailbox storage data in Outlook and Outlook on the web"},"content":{"rendered":"
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EX1428537 | Exchange Online | Some users may be unable to view mailbox storage data in Outlook and Outlook on the web<\/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>\nUsers may have been unable to view mailbox storage data in Outlook and Outlook on the web.<\/td>\n<\/tr>\n
Last Updated<\/th>\n07\/22\/2026 15:22:05<\/td>\n<\/tr>\n
Start Time<\/th>\n07\/12\/2026 00:00:00<\/td>\n<\/tr>\n
End Time<\/th>\n07\/22\/2026 00:00:00<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Some users may be unable to view mailbox storage data in Outlook and Outlook on the web <\/p>\n

User impact: Users may have been unable to view mailbox storage data in Outlook and Outlook on the web. <\/p>\n

More info: Affected users were shown the error message, “Storage data is temporarily unavailable,” when trying to view mailbox storage data for multiple mailboxes. <\/p>\n

Final status: We’ve validated that our code fix has fully deployed throughout the affected environments and has successfully remediated all impact. <\/p>\n

Scope of impact: Some users attempting to view mailbox storage data in Outlook and Outlook on the web may have been impacted. <\/p>\n

Start time: Sunday, July 12, 2026, at 12:00 AM UTC <\/p>\n

End time: Wednesday, July 22, 2026, at 12:00 AM UTC <\/p>\n

Root cause: A recent service build introduced an unsupported property into mailbox statistics data returned by a backend process. When the service attempted to retrieve mailbox storage information, the unsupported property caused the request to fail and prevented mailbox storage data from being displayed, which resulted in impact. <\/p>\n

Next steps:
– We’re reviewing our service build validation and implementation processes to improve how we detect potential unsupported properties and prevent similar mailbox storage data issues from occurring in the future. <\/p>\n

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

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\u958b\u59cb\u6642\u9593:2026\u5e747\u670812\u65e5(\u65e5)0:00 UTC <\/p>\n

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\u6b21\u306e\u30b9\u30c6\u30c3\u30d7:
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EX1428537 | Exchange Online | Some users may be unable to view mailbox storage data in Outlook and Outlook on […]<\/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-17431","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/17431","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=17431"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/17431\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=17431"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=17431"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=17431"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}