{"id":15400,"date":"2026-03-17T06:00:56","date_gmt":"2026-03-16T21:00:56","guid":{"rendered":"https:\/\/m365jp.net\/?p=15400"},"modified":"2026-03-17T06:01:06","modified_gmt":"2026-03-16T21:01:06","slug":"servicedegradation-mo1253428-microsoft-365-suite-some-users-may-be-unable-to-access-office-com-or-the-microsoft-365-copilot-web-sign-in-page-5","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-03-17-servicedegradation-mo1253428-microsoft-365-suite-some-users-may-be-unable-to-access-office-com-or-the-microsoft-365-copilot-web-sign-in-page-5","title":{"rendered":"[serviceDegradation] MO1253428 | Microsoft 365 suite | Some users may be unable to access Office.com or the Microsoft 365 Copilot web sign\u2011in page"},"content":{"rendered":"
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MO1253428 | Microsoft 365 suite | Some users may be unable to access Office.com or the Microsoft 365 Copilot web sign\u2011in page<\/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 access Office.com or the Microsoft 365 Copilot web sign\u2011in page.<\/td>\n<\/tr>\n
Last Updated<\/th>\n03\/16\/2026 20:38:52<\/td>\n<\/tr>\n
Start Time<\/th>\n03\/16\/2026 14:23:23<\/td>\n<\/tr>\n
End Time<\/th>\n<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Some users may be unable to access Office.com or the Microsoft 365 Copilot web sign\u2011in page<\/p>\n

User impact: Users may be unable to access Office.com or the Microsoft 365 Copilot web sign\u2011in page.<\/p>\n

More info: The impacted web-client is office.com, and impacted Microsoft 365 Copilot web-clients are office.com\/chat, m365.cloud.microsoft, m365.cloud.microsoft\/chat and copilot.cloud.microsoft.<\/p>\n

Users can access Microsoft Copilot through application-based Microsoft Copilot services. This includes but isn\u2019t limited to:
– Microsoft Copilot desktop app
– Copilot in Microsoft Teams
– Copilot in Office apps<\/p>\n

User may be able to leverage office.com\/search, which redirects to m365.cloud.microsoft\/search<\/a>, and should be able to sign in using this page. Once signed in, users can access the impacted web-based office.com and Copilot clients.<\/p>\n

Current status: Our efforts to apply the aforementioned configuration changes are ongoing and we\u2019re monitoring our service-side telemetry to ensure that the configuration changes are having the desired effect. In tandem, we\u2019re determining the most efficient way to reproduce the event in our testing environment so that we can validate our progress.<\/p>\n

Scope of impact: Impact is specific to some users who are served through the affected infrastructure.<\/p>\n

Next update by: Monday, March 16, 2026, at 10:30 PM UTC<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb:\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306f Office.com \u3084Microsoft 365 Copilot\u306e\u30a6\u30a7\u30d6\u30b5\u30a4\u30f3\u30a4\u30f3\u30da\u30fc\u30b8\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff:\u30e6\u30fc\u30b6\u30fc\u306f Office.com \u3084Microsoft 365 Copilot\u306e\u30a6\u30a7\u30d6\u30b5\u30a4\u30f3\u30a4\u30f3\u30da\u30fc\u30b8\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u8a73\u7d30\u60c5\u5831:\u5f71\u97ff\u3092\u53d7\u3051\u308b\u30a6\u30a7\u30d6\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f office.com \u3055\u308c\u3066\u304a\u308a\u3001\u5f71\u97ff\u3092\u53d7\u3051\u308bMicrosoft 365 Copilot\u306e\u30a6\u30a7\u30d6\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f office.com\/chat\u3001m365.cloud.microsoft\u3001m365.cloud.microsoft\/chat\u3001copilot.cloud.microsoft\u3067\u3059\u3002<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d9\u30fc\u30b9\u306eMicrosoft Copilot\u30b5\u30fc\u30d3\u30b9\u3092\u901a\u3058\u3066Microsoft Copilot\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u306f\u4ee5\u4e0b\u304c\u542b\u307e\u308c\u307e\u3059\u304c\u3001\u3053\u308c\u306b\u9650\u5b9a\u3055\u308c\u307e\u305b\u3093:
– Microsoft Copilot\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u30a2\u30d7\u30ea
– Microsoft Teams\u306eCopilot
– Office\u30a2\u30d7\u30ea\u306eCopilot<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u306f office.com\/search \u3092\u6d3b\u7528\u3067\u304d\u3001https:\/\/m365.cloud.microsoft\/search \u306b\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3055\u308c\u3001\u3053\u306e\u30da\u30fc\u30b8\u304b\u3089\u30b5\u30a4\u30f3\u30a4\u30f3\u3067\u304d\u308b\u306f\u305a\u3067\u3059\u3002\u30b5\u30a4\u30f3\u30a4\u30f3\u5f8c\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u5f71\u97ff\u3092\u53d7\u3051\u305f\u30a6\u30a7\u30d6\u30d9\u30fc\u30b9\u306e office.com \u304a\u3088\u3073Copilot\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u73fe\u72b6:\u524d\u8ff0\u306e\u8a2d\u5b9a\u5909\u66f4\u306e\u9069\u7528\u4f5c\u696d\u306f\u7d99\u7d9a\u4e2d\u3067\u3042\u308a\u3001\u30b5\u30fc\u30d3\u30b9\u5074\u306e\u30c6\u30ec\u30e1\u30c8\u30ea\u3092\u76e3\u8996\u3057\u3066\u8a2d\u5b9a\u5909\u66f4\u304c\u671b\u307e\u3057\u3044\u52b9\u679c\u3092\u767a\u63ee\u3057\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u3002\u540c\u6642\u306b\u3001\u79c1\u305f\u3061\u306f\u30c6\u30b9\u30c8\u74b0\u5883\u3067\u30a4\u30d9\u30f3\u30c8\u3092\u6700\u3082\u52b9\u7387\u7684\u306b\u518d\u73fe\u3059\u308b\u65b9\u6cd5\u3092\u6a21\u7d22\u3057\u3001\u9032\u6357\u3092\u691c\u8a3c\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u5f71\u97ff\u7bc4\u56f2:\u5f71\u97ff\u306f\u5f71\u97ff\u3092\u53d7\u3051\u305f\u30a4\u30f3\u30d5\u30e9\u3092\u901a\u3058\u3066\u30b5\u30fc\u30d3\u30b9\u3092\u53d7\u3051\u308b\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u7279\u6709\u306e\u3082\u306e\u3067\u3059\u3002<\/p>\n

\u6b21\u56de\u66f4\u65b0:2026\u5e743\u670816\u65e5(\u6708)\u5348\u5f8c10\u664230\u5206 UTC<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

MO1253428 | Microsoft 365 suite | Some users may be unable to access Office.com or the Microsoft 365 Copilot w […]<\/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-15400","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15400","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=15400"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15400\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=15400"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=15400"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=15400"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}