{"id":14370,"date":"2025-12-18T13:01:10","date_gmt":"2025-12-18T04:01:10","guid":{"rendered":"https:\/\/m365jp.net\/?p=14370"},"modified":"2025-12-18T13:06:11","modified_gmt":"2025-12-18T04:06:11","slug":"servicerestored-mo1198797-microsoft-365-suite-users-in-japan-and-china-may-be-experiencing-access-and-sign-in-issues-with-microsoft-365-and-microsoft-copilot","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2025-12-18-servicerestored-mo1198797-microsoft-365-suite-users-in-japan-and-china-may-be-experiencing-access-and-sign-in-issues-with-microsoft-365-and-microsoft-copilot","title":{"rendered":"[serviceRestored] MO1198797 | Microsoft 365 suite | Users in Japan and China may be experiencing access and sign\u2011in issues with Microsoft 365 and Microsoft Copilot"},"content":{"rendered":"
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MO1198797 | Microsoft 365 suite | Users in Japan and China may be experiencing access and sign\u2011in issues with Microsoft 365 and Microsoft Copilot<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n\n\n\n\n\n\n\n\n\n\n
Status<\/th>\nserviceRestored<\/td>\n<\/tr>\n
Classification<\/th>\nincident<\/td>\n<\/tr>\n
User Impact<\/th>\nUsers in Japan and China may have been experiencing access and sign\u2011in issues with Microsoft 365 and Microsoft Copilot.<\/td>\n<\/tr>\n
Last Updated<\/th>\n12\/18\/2025 03:53:50<\/td>\n<\/tr>\n
Start Time<\/th>\n12\/18\/2025 00:00:00<\/td>\n<\/tr>\n
End Time<\/th>\n12\/18\/2025 01:17:00<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Users in Japan and China may be experiencing access and sign\u2011in issues with Microsoft 365 and Microsoft Copilot<\/p>\n

User impact: Users in Japan and China may have been experiencing access and sign\u2011in issues with Microsoft 365 and Microsoft Copilot.<\/p>\n

Final status: We\u2019ve confirmed that the issue has been resolved, and all services are now operating as expected. <\/p>\n

Scope of impact: Your organization may have been affected by this event, and some users in Japan, China, and Malaysia who attempted to access Microsoft 365 services including Copilot may have been impacted. <\/p>\n

Start time: Thursday, December 18, 2025, at 12:00 AM UTC<\/p>\n

End time: Thursday, December 18, 2025, at 1:17 AM UTC<\/p>\n

Preliminary root cause: A traffic routing issue caused infrastructure in Japan to become unhealthy, which ultimately blocked users from successfully connecting to Microsoft 365 and Copilot services.<\/p>\n

Next steps:
– We\u2019re evaluating our network traffic routing flows to improve overall performance and help reduce future service disruptions.<\/p>\n

We’ll provide a preliminary Post-Incident Report within two business days and a final Post-Incident Report within five business days.<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb:\u65e5\u672c\u304a\u3088\u3073\u4e2d\u56fd\u306e\u30e6\u30fc\u30b6\u30fc\u306f\u3001Microsoft 365\u304a\u3088\u3073Microsoft Copilot\u306e\u30a2\u30af\u30bb\u30b9\u304a\u3088\u3073\u30b5\u30a4\u30f3\u30a4\u30f3\u554f\u984c\u306b\u76f4\u9762\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff:\u65e5\u672c\u3068\u4e2d\u56fd\u306e\u30e6\u30fc\u30b6\u30fc\u306fMicrosoft 365\u304a\u3088\u3073Microsoft Copilot\u306e\u30a2\u30af\u30bb\u30b9\u3084\u30b5\u30a4\u30f3\u30a4\u30f3\u306e\u554f\u984c\u3092\u7d4c\u9a13\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u6700\u7d42\u72b6\u6cc1:\u554f\u984c\u306f\u89e3\u6c7a\u3055\u308c\u3001\u3059\u3079\u3066\u306e\u30b5\u30fc\u30d3\u30b9\u304c\u671f\u5f85\u901a\u308a\u306b\u7a3c\u50cd\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002<\/p>\n

\u5f71\u97ff\u7bc4\u56f2:\u8cb4\u7d44\u7e54\u306f\u3053\u306e\u30a4\u30d9\u30f3\u30c8\u306e\u5f71\u97ff\u3092\u53d7\u3051\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u65e5\u672c\u3001\u4e2d\u56fd\u3001\u30de\u30ec\u30fc\u30b7\u30a2\u3067Microsoft 365\u30b5\u30fc\u30d3\u30b9(Copilot\u3092\u542b\u3080)\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3057\u305f\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u5f71\u97ff\u3092\u53d7\u3051\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u958b\u59cb\u6642\u9593:2025\u5e7412\u670818\u65e5\u6728\u66dc\u65e5 0:00 UTC<\/p>\n

\u7d42\u4e86\u6642\u523b:2025\u5e7412\u670818\u65e5\u6728\u66dc\u65e5 \u5348\u524d1\u664217\u5206 UTC<\/p>\n

\u4e88\u5099\u7684\u306a\u6839\u672c\u539f\u56e0:\u65e5\u672c\u306e\u30a4\u30f3\u30d5\u30e9\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u554f\u984c\u306b\u3088\u308a\u3001\u4e0d\u5065\u5eb7\u306a\u72b6\u614b\u3068\u306a\u308a\u3001\u6700\u7d42\u7684\u306bMicrosoft 365\u3084Copilot\u30b5\u30fc\u30d3\u30b9\u3078\u306e\u63a5\u7d9a\u304c\u59a8\u3052\u3089\u308c\u307e\u3057\u305f\u3002<\/p>\n

\u6b21\u306e\u30b9\u30c6\u30c3\u30d7:
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\u4e88\u5099\u7684\u306a\u4e8b\u5f8c\u5831\u544a\u66f8\u30922\u55b6\u696d\u65e5\u4ee5\u5185\u306b\u3001\u6700\u7d42\u7684\u306a\u4e8b\u5f8c\u5831\u544a\u66f8\u30925\u55b6\u696d\u65e5\u4ee5\u5185\u306b\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

MO1198797 | Microsoft 365 suite | Users in Japan and China may be experiencing access and sign\u2011in issues with […]<\/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-14370","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/14370","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=14370"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/14370\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=14370"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=14370"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=14370"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}