{"id":17070,"date":"2026-06-27T05:01:19","date_gmt":"2026-06-26T20:01:19","guid":{"rendered":"https:\/\/m365jp.net\/?p=17070"},"modified":"2026-06-27T05:02:10","modified_gmt":"2026-06-26T20:02:10","slug":"servicedegradation-ex1233142-exchange-online-some-users-may-see-that-when-selecting-a-meeting-room-when-scheduling-meetings-it-changes-from-available-to-unavailable-11","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-06-27-servicedegradation-ex1233142-exchange-online-some-users-may-see-that-when-selecting-a-meeting-room-when-scheduling-meetings-it-changes-from-available-to-unavailable-11","title":{"rendered":"[serviceDegradation] EX1233142 | Exchange Online | Some users may see that when selecting a meeting room when scheduling meetings, it changes from available to unavailable"},"content":{"rendered":"
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EX1233142 | Exchange Online | Some users may see that when selecting a meeting room when scheduling meetings, it changes from available to unavailable<\/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 see that after selecting a meeting room when scheduling meetings, it changes from available to unavailable.<\/td>\n<\/tr>\n
Last Updated<\/th>\n06\/26\/2026 19:28:51<\/td>\n<\/tr>\n
Start Time<\/th>\n12\/08\/2025 03:04:00<\/td>\n<\/tr>\n
End Time<\/th>\n<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Some users may see that when selecting a meeting room when scheduling meetings, it changes from available to unavailable <\/p>\n

User impact: Users may see that after selecting a meeting room when scheduling meetings, it changes from available to unavailable. <\/p>\n

More info: While we’re working to remediate the impact, admins can circumvent the issue by assigning the desired working hours and the time zone for the meeting rooms. <\/p>\n

Current status: We\u2019ve confirmed that our fix encountered a deployment blocker that slowed progress. We’ve addressed the blocker and confirmed that the fix is deploying at a normal rate and has reached 25 percent of the affected environment. We\u2019ll continue monitoring its progress to ensure it completes as expected by our next scheduled update. We\u2019re also reaching out to a subset of affected users to validate the fix ahead of schedule to expedite the deployment process. <\/p>\n

Scope of impact: Any users that are trying to select a meeting room when scheduling meetings outside the room’s working hours in Exchange Online may be impacted. <\/p>\n

Start time: Monday, December 8, 2025, at 3:04 AM UTC <\/p>\n

Root cause: A recent expansion of the feature logic used to book rooms for scheduled meetings contains a code complication which automatically sets the meeting rooms’ default working hours to appear in Pacific Standard Time instead of their accurate time zone. <\/p>\n

Next update by: Thursday, July 2, 2026, at 8:30 PM UTC<\/td>\n<\/tr>\n

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