{"id":15422,"date":"2026-03-18T00:01:23","date_gmt":"2026-03-17T15:01:23","guid":{"rendered":"https:\/\/m365jp.net\/?p=15422"},"modified":"2026-03-18T00:02:02","modified_gmt":"2026-03-17T15:02:02","slug":"servicedegradation-ex1254044-exchange-online-some-users-may-be-unable-to-use-microsoft-outlook-classic-while-the-microsoft-teams-meeting-add-in-is-enabled","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-03-18-servicedegradation-ex1254044-exchange-online-some-users-may-be-unable-to-use-microsoft-outlook-classic-while-the-microsoft-teams-meeting-add-in-is-enabled","title":{"rendered":"[serviceDegradation] EX1254044 | Exchange Online | Some users may be unable to use Microsoft Outlook Classic while the Microsoft Teams Meeting Add-in is enabled"},"content":{"rendered":"
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EX1254044 | Exchange Online | Some users may be unable to use Microsoft Outlook Classic while the Microsoft Teams Meeting Add-in is enabled<\/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>\nincident<\/td>\n<\/tr>\n
User Impact<\/th>\nUsers may be unable to use Microsoft Outlook Classic while the Microsoft Teams Meeting Add-in is enabled.<\/td>\n<\/tr>\n
Last Updated<\/th>\n03\/17\/2026 14:54:35<\/td>\n<\/tr>\n
Start Time<\/th>\n03\/12\/2026 12:36:00<\/td>\n<\/tr>\n
End Time<\/th>\n<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Some users may be unable to use Microsoft Outlook Classic while the Microsoft Teams Meeting Add-in is enabled<\/p>\n

User impact: Users may be unable to use Microsoft Outlook Classic while the Microsoft Teams Meeting Add-in is enabled.<\/p>\n

More info: If Teams Meeting Add-in is disabled then Outlook Classic functions as normal.<\/p>\n

As a workaround, users can also perform an Online Repair of Office or update Outlook to the latest version to resolve the issue.<\/p>\n

Current status: We’ve identified that a previous Outlook build version is causing impact to occur. We’re working with your representatives to ensure that the latest Outlook version is enabled, to mitigate impact.<\/p>\n

Scope of impact: Users attempting to use Microsoft Outlook Classic while the Microsoft Teams Meeting Add-in and previous Outlook build version is enabled may be impacted.<\/p>\n

Start time: Thursday, March 12, 2026, at 12:36 PM UTC<\/p>\n

Root cause: A previous Outlook build version that is enabled is causing impact to occur.<\/p>\n

Next update by: Thursday, March 19, 2026, at 10:30 AM UTC<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb:\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306f\u3001Microsoft Teams Meeting\u30a2\u30c9\u30a4\u30f3\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u9593\u3001Microsoft Outlook Classic\u3092\u4f7f\u3048\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff:Microsoft Teams Meeting\u30a2\u30c9\u30a4\u30f3\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u9593\u3001\u30e6\u30fc\u30b6\u30fc\u306fMicrosoft Outlook Classic\u3092\u4f7f\u7528\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u8a73\u7d30\u60c5\u5831:Teams\u306e\u4f1a\u8b70\u30a2\u30c9\u30a4\u30f3\u3092\u7121\u52b9\u306b\u3059\u308b\u3068\u3001Outlook Classic\u306f\u901a\u5e38\u901a\u308a\u52d5\u4f5c\u3057\u307e\u3059\u3002<\/p>\n

\u56de\u907f\u7b56\u3068\u3057\u3066\u3001\u30e6\u30fc\u30b6\u30fc\u306fOffice\u306e\u30aa\u30f3\u30e9\u30a4\u30f3\u4fee\u5fa9\u3092\u884c\u3046\u304b\u3001Outlook\u3092\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u66f4\u65b0\u3057\u3066\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u73fe\u72b6:\u4ee5\u524d\u306eOutlook\u30d3\u30eb\u30c9\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u5f71\u97ff\u3092\u5f15\u304d\u8d77\u3053\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u7279\u5b9a\u3057\u307e\u3057\u305f\u3002\u5f71\u97ff\u3092\u8efd\u6e1b\u3059\u308b\u305f\u3081\u3001\u6700\u65b0\u306eOutlook\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u6709\u52b9\u306b\u306a\u308b\u3088\u3046\u62c5\u5f53\u8005\u3068\u5354\u529b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u5f71\u97ff\u7bc4\u56f2:Microsoft Teams Meeting\u30a2\u30c9\u30a4\u30f3\u304a\u3088\u3073\u4ee5\u524d\u306eOutlook\u30d3\u30eb\u30c9\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u6709\u52b9\u5316\u3055\u308c\u305f\u72b6\u614b\u3067Microsoft Outlook Classic\u3092\u4f7f\u7528\u3057\u3088\u3046\u3068\u3059\u308b\u30e6\u30fc\u30b6\u30fc\u306f\u5f71\u97ff\u3092\u53d7\u3051\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u958b\u59cb\u6642\u9593:2026\u5e743\u670812\u65e5\u6728\u66dc\u65e5 12:36 PM UTC<\/p>\n

\u6839\u672c\u539f\u56e0:\u4ee5\u524d\u306eOutlook\u30d3\u30eb\u30c9\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u3067\u5f71\u97ff\u304c\u767a\u751f\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u6b21\u56de\u66f4\u65b0:2026\u5e743\u670819\u65e5\u6728\u66dc\u65e5 \u5348\u524d10\u664230\u5206 UTC<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

EX1254044 | Exchange Online | Some users may be unable to use Microsoft Outlook Classic while the Microsoft Te […]<\/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-15422","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15422","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=15422"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15422\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=15422"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=15422"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=15422"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}