{"id":18680,"date":"2026-09-24T01:01:25","date_gmt":"2026-09-23T16:01:25","guid":{"rendered":"https:\/\/m365jp.net\/?p=18680"},"modified":"2026-09-24T01:07:02","modified_gmt":"2026-09-23T16:07:02","slug":"servicedegradation-ex1476802-exchange-online-some-users-may-be-unable-to-open-the-account-view-in-outlook-on-the-web-2","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-09-24-servicedegradation-ex1476802-exchange-online-some-users-may-be-unable-to-open-the-account-view-in-outlook-on-the-web-2","title":{"rendered":"[serviceDegradation] 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>\nserviceDegradation<\/td>\n<\/tr>\n
Classification<\/th>\nadvisory<\/td>\n<\/tr>\n
User Impact<\/th>\nUsers may be unable to open the account view in Outlook on the web.<\/td>\n<\/tr>\n
Last Updated<\/th>\n09\/23\/2026 15:51:06<\/td>\n<\/tr>\n
Start Time<\/th>\n09\/22\/2026 14:06:31<\/td>\n<\/tr>\n
End Time<\/th>\n<\/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 be unable to open the account view in Outlook on the web. <\/p>\n

More info: When attempting to access the account page, the authentication flow fails with the following error: ‘AADSTS90002: Tenant ‘XXXXXXXXXXXXXXXXXXXXXXXXXXXX’ not found. Check to make sure you have the correct tenant ID and are signing into the correct cloud. Check with your subscription administrator, this may happen if there are no active subscriptions for the tenant.’ <\/p>\n

Current status: We’ve identified that a code misconfiguration was introduced by a service change intended to modernize the Outlook on the web header, resulting in impact. We’ve developed and validated a fix to address the code misconfiguration, which we’re preparing to deploy to the affected environment. We anticipate the deployment of our fix will begin by our next scheduled communications update. <\/p>\n

Scope of impact: Some users attempting to open the account view in Outlook on the web may be impacted. This section may be updated as our investigation continues. <\/p>\n

Start time: Tuesday, September 22, 2026, at 12:44 PM 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 update by: Wednesday, September 23, 2026, at 6:00 PM UTC<\/td>\n<\/tr>\n

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\u958b\u59cb\u6642\u9593:2026\u5e749\u670822\u65e5\u706b\u66dc\u65e5 12:44 PM UTC <\/p>\n

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