{"id":17382,"date":"2026-07-20T22:01:21","date_gmt":"2026-07-20T13:01:21","guid":{"rendered":"https:\/\/m365jp.net\/?p=17382"},"modified":"2026-07-20T22:01:34","modified_gmt":"2026-07-20T13:01:34","slug":"servicedegradation-ex1428537-exchange-online-some-users-may-be-unable-to-view-mailbox-storage-data-in-outlook-and-outlook-on-the-web-3","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-07-20-servicedegradation-ex1428537-exchange-online-some-users-may-be-unable-to-view-mailbox-storage-data-in-outlook-and-outlook-on-the-web-3","title":{"rendered":"[serviceDegradation] 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>\nserviceDegradation<\/td>\n<\/tr>\n
Classification<\/th>\nadvisory<\/td>\n<\/tr>\n
User Impact<\/th>\nUsers may be unable to view mailbox storage data in Outlook and Outlook on the web.<\/td>\n<\/tr>\n
Last Updated<\/th>\n07\/20\/2026 12:17:06<\/td>\n<\/tr>\n
Start Time<\/th>\n07\/15\/2026 11:35:17<\/td>\n<\/tr>\n
End Time<\/th>\n<\/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 be unable to view mailbox storage data in Outlook and Outlook on the web.<\/p>\n

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

Current status: We’ve completed validation and initiated the release of the fix. Currently at approximately 30 percent, we’re monitoring as it progresses and expect to have a complete remediation timeline by the next scheduled update. <\/p>\n

Scope of impact: Some users attempting to view mailbox storage data in Outlook and Outlook on the web may be impacted. This information may be updated as our investigation continues.<\/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.<\/p>\n

Next update by: Monday, July 20, 2026, at 7:00 PM UTC<\/td>\n<\/tr>\n

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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-17382","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/17382","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=17382"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/17382\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=17382"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=17382"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=17382"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}