{"id":15424,"date":"2026-03-18T01:00:58","date_gmt":"2026-03-17T16:00:58","guid":{"rendered":"https:\/\/m365jp.net\/?p=15424"},"modified":"2026-03-18T01:03:14","modified_gmt":"2026-03-17T16:03:14","slug":"servicedegradation-mo1254319-microsoft-365-suite-some-users-may-be-unable-to-access-office-com-or-the-microsoft-365-copilot-web-sign-in-page-2","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-03-18-servicedegradation-mo1254319-microsoft-365-suite-some-users-may-be-unable-to-access-office-com-or-the-microsoft-365-copilot-web-sign-in-page-2","title":{"rendered":"[serviceDegradation] MO1254319 | 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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MO1254319 | 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\/17\/2026 15:55:09<\/td>\n<\/tr>\n
Start Time<\/th>\n03\/17\/2026 14:04:03<\/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 is not limited to:
– Microsoft Copilot desktop app
– Copilot in Microsoft Teams
– Copilot in Office apps
User may be able to leverage 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: We’re continuing to apply configuration changes and rebalance the request traffic while monitoring service health telemetry to ensure the services recover.<\/p>\n

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

Start time: Tuesday, March 17, 2026, at 11:42 AM UTC<\/p>\n

Root cause: The infrastructure that supports access to Office.com and the Microsoft 365 Copilot web sign-in page is receiving a high volume of traffic that inhibits the rate at which some users’ requests are being processed, preventing some users from accessing the service pages.<\/p>\n

Next update by: Tuesday, March 17, 2026, at 6:00 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
\u30e6\u30fc\u30b6\u30fc\u306f m365.cloud.microsoft\/search<\/a> \u3092\u6d3b\u7528\u3067\u304d\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\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:\u8a2d\u5b9a\u5909\u66f4\u3092\u7d99\u7d9a\u3057\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u30ea\u30d0\u30e9\u30f3\u30b9\u3092\u7d99\u7d9a\u3057\u3064\u3064\u3001\u30b5\u30fc\u30d3\u30b9\u306e\u5065\u5eb7\u30c6\u30ec\u30e1\u30c8\u30ea\u3092\u76e3\u8996\u3057\u3066\u30b5\u30fc\u30d3\u30b9\u304c\u56de\u5fa9\u3057\u3066\u3044\u308b\u304b\u78ba\u8a8d\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

\u958b\u59cb\u6642\u9593:2026\u5e743\u670817\u65e5\u706b\u66dc\u65e5 \u5348\u524d11\u664242\u5206 UTC<\/p>\n

\u6839\u672c\u539f\u56e0:Office.com \u304a\u3088\u3073Microsoft 365 Copilot\u306e\u30a6\u30a7\u30d6\u30b5\u30a4\u30f3\u30a4\u30f3\u30da\u30fc\u30b8\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u30a4\u30f3\u30d5\u30e9\u304c\u5927\u91cf\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u53d7\u3051\u53d6\u3063\u3066\u304a\u308a\u3001\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u51e6\u7406\u901f\u5ea6\u304c\u59a8\u3052\u3089\u308c\u3001\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u30b5\u30fc\u30d3\u30b9\u30da\u30fc\u30b8\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u304f\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u6b21\u56de\u66f4\u65b0:2026\u5e743\u670817\u65e5\u706b\u66dc\u65e5 \u5348\u5f8c6\u6642 UTC<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

MO1254319 | 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-15424","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15424","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=15424"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15424\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=15424"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=15424"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=15424"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}