{"id":18684,"date":"2026-09-24T02:01:10","date_gmt":"2026-09-23T17:01:10","guid":{"rendered":"https:\/\/m365jp.net\/?p=18684"},"modified":"2026-09-24T02:12:45","modified_gmt":"2026-09-23T17:12:45","slug":"servicerestored-ex1476802-exchange-online-some-users-may-be-unable-to-open-the-account-view-in-outlook-on-the-web","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-09-24-servicerestored-ex1476802-exchange-online-some-users-may-be-unable-to-open-the-account-view-in-outlook-on-the-web","title":{"rendered":"[serviceRestored] EX1476802 | Exchange Online | Some users may be unable to open the account view in Outlook on the web"},"content":{"rendered":"
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EX1476802 | Exchange Online | Some users may be unable to open the account view 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>\nserviceRestored<\/td>\n<\/tr>\n
Classification<\/th>\nadvisory<\/td>\n<\/tr>\n
User Impact<\/th>\nUsers may have been unable to open the account view in Outlook on the web.<\/td>\n<\/tr>\n
Last Updated<\/th>\n09\/23\/2026 16:27:38<\/td>\n<\/tr>\n
Start Time<\/th>\n09\/22\/2026 12:13:00<\/td>\n<\/tr>\n
End Time<\/th>\n09\/23\/2026 16:17:19<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Some users may be unable to open the account view in Outlook on the web <\/p>\n

User impact: Users may have been unable to open the account view in Outlook on the web. <\/p>\n

More info: When users attempted to access the account page, the authentication flow failed with the following error: ‘AADSTS90002: Tenant ‘XXXXXXXXXXXXXXXXXXXXXXXXXXXX’ not found. <\/p>\n

Final status: Following the deployment of our code fix, we’ve validated with affected users that the code fix has been addressed, and that the impact has been remediated. If users still encounter this problem, they can refresh their Outlook on the web browser session to immediately receive the fix. <\/p>\n

Scope of impact: Some users who attempted to open the account view in Outlook on the web may have been impacted. <\/p>\n

Start time: Tuesday, September 22, 2026, at 12:44 PM UTC <\/p>\n

End time: Wednesday, September 23, 2026, at 2:00 AM UTC <\/p>\n

Root cause: A code misconfiguration was introduced by a recent service change intended to modernize the Outlook on the web header, resulting in impact. <\/p>\n

Next steps:
– We’re further analyzing the recent impacting change to help us improve our pre-deployment tests and validations.<\/p>\n

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

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EX1476802 | Exchange Online | Some users may be unable to open the account view in Outlook on the web Status s […]<\/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-18684","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/18684","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=18684"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/18684\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=18684"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=18684"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=18684"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}