{"id":13013,"date":"2025-09-26T14:00:48","date_gmt":"2025-09-26T05:00:48","guid":{"rendered":"https:\/\/m365jp.net\/?p=13013"},"modified":"2025-09-26T14:01:11","modified_gmt":"2025-09-26T05:01:11","slug":"servicerestored-op1159773-microsoft-365-apps-users-may-be-unable-to-access-portal-office-com-through-microsoft-365-apps-for-the-web","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2025-09-26-servicerestored-op1159773-microsoft-365-apps-users-may-be-unable-to-access-portal-office-com-through-microsoft-365-apps-for-the-web","title":{"rendered":"[serviceRestored] OP1159773 | Microsoft 365 apps | Users may be unable to access portal.office.com through Microsoft 365 apps for the web"},"content":{"rendered":"
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OP1159773 | Microsoft 365 apps | Users may be unable to access portal.office.com through Microsoft 365 apps for the web<\/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>\nadvisory<\/td>\n<\/tr>\n
User Impact<\/th>\nUsers were unable to access portal.office.com through Microsoft 365 apps for the web.<\/td>\n<\/tr>\n
Last Updated<\/th>\n09\/26\/2025 04:05:54<\/td>\n<\/tr>\n
Start Time<\/th>\n09\/26\/2025 02:02:46<\/td>\n<\/tr>\n
End Time<\/th>\n09\/26\/2025 03:15:00<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Users may be unable to access portal.office.com through Microsoft 365 apps for the web<\/p>\n

User impact: Users were unable to access portal.office.com through Microsoft 365 apps for the web.<\/p>\n

More info: Affected admins may have been unable to access the Microsoft 365 admin center through portal.office.com. However, admins could still access the Microsoft 365 admin center by utilizing admin.microsoft.com.
Additional impact included the inability to install Microsoft 365 apps directly from portal.office.com.<\/p>\n

Final status: Our analysis of the aforementioned investigative material has determined that the application of a configuration change specific to infrastructure responsible for facilitating access to portal.office.com wasn\u2019t properly updated and resulted in impact. We\u2019ve manually updated the affected service infrastructure and after an extended period of monitoring the service health telemetry, confirmed that impact has been remediated.<\/p>\n

Scope of impact: Users who attempted to access portal.office.com through Microsoft 365 apps for the web may have been affected.<\/p>\n

Start time: Friday, September 26, 2025, at 12:30 AM UTC<\/p>\n

End time: Friday, September 26, 2025, at 3:15 AM UTC<\/p>\n

Root cause: The application of a configuration change specific to infrastructure responsible for facilitating access to portal.office.com wasn\u2019t properly updated and resulted in impact.<\/p>\n

Next steps:
– We’re analyzing the offending configuration change to understand why the potential for impact wasn’t caught during the update testing and validation phase. These actions will help us to clarify what actions we can take to ensure similar impact doesn’t occur in the future and will improve the resilience of our service for all Microsoft 365 apps users.<\/p>\n

This is the final update for the event.<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb: \u30e6\u30fc\u30b6\u30fc\u306f\u3001Microsoft 365 apps for the web \u3092\u4ecb\u3057\u3066 portal.office.com \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\u3001Microsoft 365 Apps for the web\u3092\u4ecb\u3057\u3066 portal.office.com \u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n

\u8a73\u7d30: \u5f71\u97ff\u3092\u53d7\u3051\u308b\u7ba1\u7406\u8005\u306f\u3001portal.office.com \u3092\u4ecb\u3057\u3066 Microsoft 365 \u7ba1\u7406\u30bb\u30f3\u30bf\u30fc\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u304b\u3063\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u7ba1\u7406\u8005\u306f\u5f15\u304d\u7d9a\u304d admin.microsoft.com \u3092\u5229\u7528\u3057\u3066 Microsoft 365 \u7ba1\u7406\u30bb\u30f3\u30bf\u30fc\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u3002
\u305d\u306e\u4ed6\u306e\u5f71\u97ff\u306b\u306f\u3001portal.office.com \u304b\u3089\u76f4\u63a5Microsoft 365\u30a2\u30d7\u30ea\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3067\u304d\u306a\u3044\u3053\u3068\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n

\u6700\u7d42\u30b9\u30c6\u30fc\u30bf\u30b9: \u524d\u8ff0\u306e\u8abf\u67fb\u8cc7\u6599\u3092\u5206\u6790\u3057\u305f\u7d50\u679c\u3001portal.office.com \u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u5bb9\u6613\u306b\u3059\u308b\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306b\u56fa\u6709\u306e\u69cb\u6210\u5909\u66f4\u306e\u9069\u7528\u304c\u9069\u5207\u306b\u66f4\u65b0\u3055\u308c\u3066\u304a\u3089\u305a\u3001\u5f71\u97ff\u304c\u751f\u3058\u305f\u3053\u3068\u304c\u5224\u660e\u3057\u307e\u3057\u305f\u3002\u5f71\u97ff\u3092\u53d7\u3051\u308b\u30b5\u30fc\u30d3\u30b9 \u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u3092\u624b\u52d5\u3067\u66f4\u65b0\u3057\u3001\u30b5\u30fc\u30d3\u30b9\u6b63\u5e38\u6027\u30c6\u30ec\u30e1\u30c8\u30ea\u3092\u9577\u671f\u9593\u76e3\u8996\u3057\u305f\u5f8c\u3001\u5f71\u97ff\u304c\u4fee\u5fa9\u3055\u308c\u305f\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002<\/p>\n

\u5f71\u97ff\u306e\u7bc4\u56f2: Microsoft 365 apps for the web\u3092\u4ecb\u3057\u3066 portal.office.com \u306b\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3057\u305f\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 \u5e74 9 \u6708 26 \u65e5\u91d1\u66dc\u65e5\u5348\u524d 12 \u6642 30 \u5206 UTC<\/p>\n

\u7d42\u4e86\u6642\u523b: 2025 \u5e74 9 \u6708 26 \u65e5\u91d1\u66dc\u65e5\u5348\u524d 3 \u6642 15 \u5206 UTC<\/p>\n

\u6839\u672c\u539f\u56e0: portal.office.com \u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u5bb9\u6613\u306b\u3059\u308b\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306b\u56fa\u6709\u306e\u69cb\u6210\u5909\u66f4\u306e\u9069\u7528\u304c\u9069\u5207\u306b\u66f4\u65b0\u3055\u308c\u305a\u3001\u5f71\u97ff\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u3002<\/p>\n

\u6b21\u306e\u30b9\u30c6\u30c3\u30d7:
– \u554f\u984c\u306e\u3042\u308b\u69cb\u6210\u5909\u66f4\u3092\u5206\u6790\u3057\u3066\u3001\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30c6\u30b9\u30c8\u3068\u691c\u8a3c\u30d5\u30a7\u30fc\u30ba\u3067\u5f71\u97ff\u306e\u53ef\u80fd\u6027\u304c\u691c\u51fa\u3055\u308c\u306a\u304b\u3063\u305f\u7406\u7531\u3092\u7406\u89e3\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u306f\u3001\u5c06\u6765\u540c\u69d8\u306e\u5f71\u97ff\u304c\u767a\u751f\u3057\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u306b\u5b9f\u884c\u3067\u304d\u308b\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u660e\u78ba\u306b\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u3001\u3059\u3079\u3066\u306e Microsoft 365 \u30a2\u30d7\u30ea \u30e6\u30fc\u30b6\u30fc\u306b\u5bfe\u3059\u308b\u30b5\u30fc\u30d3\u30b9\u306e\u56de\u5fa9\u6027\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n

\u30a4\u30d9\u30f3\u30c8\u306e\u6700\u7d42\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3067\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

OP1159773 | Microsoft 365 apps | Users may be unable to access portal.office.com through Microsoft 365 apps fo […]<\/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-13013","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/13013","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=13013"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/13013\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=13013"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=13013"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=13013"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}