{"id":15921,"date":"2026-04-15T05:01:06","date_gmt":"2026-04-14T20:01:06","guid":{"rendered":"https:\/\/m365jp.net\/?p=15921"},"modified":"2026-04-15T05:01:41","modified_gmt":"2026-04-14T20:01:41","slug":"investigationsuspended-ex1260260-exchange-online-users-may-be-unable-to-access-archived-email-messages-in-outlook-on-the-web-2","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-04-15-investigationsuspended-ex1260260-exchange-online-users-may-be-unable-to-access-archived-email-messages-in-outlook-on-the-web-2","title":{"rendered":"[investigationSuspended] EX1260260 | Exchange Online | Users may be unable to access archived email messages in Outlook on the web"},"content":{"rendered":"
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EX1260260 | Exchange Online | Users may be unable to access archived email messages in 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>\ninvestigationSuspended<\/td>\n<\/tr>\n
Classification<\/th>\nadvisory<\/td>\n<\/tr>\n
User Impact<\/th>\nUsers may be unable to access archived email messages in Outlook on the web. <\/td>\n<\/tr>\n
Last Updated<\/th>\n04\/14\/2026 19:17:35<\/td>\n<\/tr>\n
Start Time<\/th>\n03\/24\/2026 09:37:00<\/td>\n<\/tr>\n
End Time<\/th>\n04\/14\/2026 17:36:24<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Users may be unable to access archived email messages in Outlook on the web<\/p>\n

User impact: Users may be unable to access archived email messages in Outlook on the web. <\/p>\n

Final status: We’ve validated the fix has completed deployment to all affected environments. However, users that reported the issue haven’t responded to validate that our corrective actions resolved the issue. In the event impact persists, please contact one of our support representatives so we can continue our investigation into the problem.<\/p>\n

Scope of impact: Impact is specific to some users attempting to access archived email messages in Outlook on the web.<\/p>\n

Start time: Tuesday, March 24, 2026, at 9:37 AM UTC<\/p>\n

Root cause: A code issue is resulting in restricted access when archiving email messages in Outlook on the web. The primary and archive mailboxes are on different machines, the request to access the mailbox is landing in the correct portion of infrastructure but is trying to find the primary instead of the archive mailbox, resulting in impact.<\/p>\n

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

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb:\u30e6\u30fc\u30b6\u30fc\u306f\u30a6\u30a7\u30d6\u4e0a\u306eOutlook\u3067\u30a2\u30fc\u30ab\u30a4\u30d6\u3055\u308c\u305f\u30e1\u30fc\u30eb\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059<\/p>\n

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EX1260260 | Exchange Online | Users may be unable to access archived email messages in Outlook on the web Stat […]<\/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-15921","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15921","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=15921"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15921\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=15921"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=15921"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=15921"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}