{"id":13373,"date":"2025-10-17T18:01:00","date_gmt":"2025-10-17T09:01:00","guid":{"rendered":"https:\/\/m365jp.net\/?p=13373"},"modified":"2025-10-17T18:01:18","modified_gmt":"2025-10-17T09:01:18","slug":"servicedegradation-ex1173600-exchange-online-some-users-may-have-the-new-outlook-client-open-in-their-web-browser-instead-of-the-desktop-client","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2025-10-17-servicedegradation-ex1173600-exchange-online-some-users-may-have-the-new-outlook-client-open-in-their-web-browser-instead-of-the-desktop-client","title":{"rendered":"[serviceDegradation] EX1173600 | Exchange Online | Some users may have the new Outlook client open in their web browser instead of the Desktop client"},"content":{"rendered":"
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EX1173600 | Exchange Online | Some users may have the new Outlook client open in their web browser instead of the Desktop client<\/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 have the new Outlook client open in their web browser instead of the Desktop client.<\/td>\n<\/tr>\n
Last Updated<\/th>\n10\/17\/2025 08:41:30<\/td>\n<\/tr>\n
Start Time<\/th>\n10\/16\/2025 12:50:00<\/td>\n<\/tr>\n
End Time<\/th>\n<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Some users have the new Outlook client open in their web browser instead of the Desktop client<\/p>\n

User impact: Users have the new Outlook client open in their web browser instead of the Desktop client.<\/p>\n

More info: As a workaround, users are able to use the classic Outlook to access their Exchange Online mailbox.<\/p>\n

Current status: We’ve identified that a code bug contained in a recent service update is causing a race condition and resulting in the impact. We’ve developed a fix to address the code issue which we’re preparing to deploy to the affected environment. We’ll aim to provide a timeline for the fix to deploy by our next scheduled communications update.<\/p>\n

Scope of impact: Your organization is affected by this event, and some users attempting to open the new Outlook client are impacted.<\/p>\n

Root cause: A code issue contained in a recent service update is causing a race condition and resulting in the impact.<\/p>\n

Next update by: Monday, October 20, 2025, at 9:00 PM UTC<\/td>\n<\/tr>\n

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\u6b21\u56de\u66f4\u65b0: 2025 \u5e74 10 \u6708 20 \u65e5\u6708\u66dc\u65e5\u3001\u5348\u5f8c 9:00 UTC<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

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