{"id":16578,"date":"2026-05-29T07:01:16","date_gmt":"2026-05-28T22:01:16","guid":{"rendered":"https:\/\/m365jp.net\/?p=16578"},"modified":"2026-05-29T07:11:12","modified_gmt":"2026-05-28T22:11:12","slug":"servicedegradation-ex1233142-exchange-online-some-users-may-see-that-when-selecting-a-meeting-room-when-scheduling-meetings-it-changes-from-available-to-unavailable-8","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-05-29-servicedegradation-ex1233142-exchange-online-some-users-may-see-that-when-selecting-a-meeting-room-when-scheduling-meetings-it-changes-from-available-to-unavailable-8","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>\n05\/28\/2026 21:17:08<\/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 are 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’re progressing with our internal tests and validations so we can ensure our deployment remediates the impact. Our fix deployment timeline projects that the deployment will have completed by Friday, June 19, 2026, and we’re assessing options to expedite its release, which we anticipate we’ll have further clarity on by our next scheduled communications update. <\/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. This information may be updated as our investigation continues. <\/p>\n

Start time: Monday, December 08, 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: Wednesday, June 10, 2026, at 10:00 PM UTC<\/td>\n<\/tr>\n

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