{"id":15969,"date":"2026-04-16T21:01:04","date_gmt":"2026-04-16T12:01:04","guid":{"rendered":"https:\/\/m365jp.net\/?p=15969"},"modified":"2026-04-16T21:01:43","modified_gmt":"2026-04-16T12:01:43","slug":"servicedegradation-mo1281730-microsoft-365-suite-users-may-be-unable-to-access-microsoft-365-web-based-services-correctly-when-using-google-chrome-and-mozilla-firefox-2","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-04-16-servicedegradation-mo1281730-microsoft-365-suite-users-may-be-unable-to-access-microsoft-365-web-based-services-correctly-when-using-google-chrome-and-mozilla-firefox-2","title":{"rendered":"[serviceDegradation] MO1281730 | Microsoft 365 suite | Users may be unable to access Microsoft 365 web-based services correctly when using Google Chrome and Mozilla Firefox"},"content":{"rendered":"
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MO1281730 | Microsoft 365 suite | Users may be unable to access Microsoft 365 web-based services correctly when using Google Chrome and Mozilla Firefox<\/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 Microsoft 365 web-based services correctly when using Google Chrome and Mozilla Firefox.<\/td>\n<\/tr>\n
Last Updated<\/th>\n04\/16\/2026 11:08:23<\/td>\n<\/tr>\n
Start Time<\/th>\n04\/16\/2026 07:47:37<\/td>\n<\/tr>\n
End Time<\/th>\n<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Users may be unable to access Microsoft 365 web-based services correctly when using Google Chrome and Mozilla Firefox<\/p>\n

User impact: Users may be unable to access Microsoft 365 web-based services correctly when using Google Chrome and Mozilla Firefox.<\/p>\n

More info: Impacted users may experience Microsoft 365 web apps and portals not rendering as expected when accessed via the Google Chrome and Mozilla Firefox browsers. This may include:<\/p>\n

– Missing UI elements such as search bars, pages or the Microsoft 365 admin center failing to load.
– An inability to open Excel or PowerPoint files through Microsoft 365 web pages.
– Issues accessing apps such as OneDrive and Planner.<\/p>\n

Other browsers, including Microsoft Edge, appear to be unaffected.<\/p>\n

As a workaround, impacted users can use the Microsoft Edge browser.<\/p>\n

Current status: We’re suspecting that this issue may be related to a broader industry authentication component change affecting how some browsers validate certain authentication components. We\u2019re working to confirm the relationship and determine the appropriate next steps.<\/p>\n

Scope of impact: Some users attempting to access Microsoft 365 web-based services via Google Chrome and Mozilla Firefox may be impacted. This information may be updated as our investigation continues.<\/p>\n

Next update by: Thursday, April 16, 2026, at 1:00 PM UTC<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb:Google Chrome\u304a\u3088\u3073Mozilla Firefox\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001Microsoft 365\u306e\u30a6\u30a7\u30d6\u30d9\u30fc\u30b9\u30b5\u30fc\u30d3\u30b9\u306b\u6b63\u3057\u304f\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:Google Chrome\u3084Mozilla Firefox\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u3001Microsoft 365\u306e\u30a6\u30a7\u30d6\u30d9\u30fc\u30b9\u30b5\u30fc\u30d3\u30b9\u306b\u6b63\u3057\u304f\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\u305f\u30e6\u30fc\u30b6\u30fc\u306f\u3001Google Chrome\u304a\u3088\u3073Mozilla Firefox\u30d6\u30e9\u30a6\u30b6\u7d4c\u7531\u3067\u30a2\u30af\u30bb\u30b9\u3057\u305fMicrosoft 365\u306e\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u3084\u30dd\u30fc\u30bf\u30eb\u304c\u671f\u5f85\u901a\u308a\u306b\u8868\u793a\u3055\u308c\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u542b\u307e\u308c\u307e\u3059:<\/p>\n

– \u691c\u7d22\u30d0\u30fc\u3001\u30da\u30fc\u30b8\u3001Microsoft 365\u7ba1\u7406\u30bb\u30f3\u30bf\u30fc\u306e\u8aad\u307f\u8fbc\u307f\u306b\u5931\u6557\u3059\u308b\u306a\u3069\u306eUI\u8981\u7d20\u304c\u6b20\u843d\u3057\u3066\u3044\u308b\u3002
– Microsoft 365\u306e\u30a6\u30a7\u30d6\u30da\u30fc\u30b8\u3092\u901a\u3058\u3066Excel\u3084PowerPoint\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3051\u306a\u3044\u3053\u3068\u3002
– OneDrive\u3084\u30d7\u30e9\u30f3\u30ca\u30fc\u306a\u3069\u306e\u30a2\u30d7\u30ea\u3078\u306e\u30a2\u30af\u30bb\u30b9\u306b\u554f\u984c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

Microsoft Edge\u3092\u542b\u3080\u4ed6\u306e\u30d6\u30e9\u30a6\u30b6\u306f\u5f71\u97ff\u3092\u53d7\u3051\u3066\u3044\u306a\u3044\u3088\u3046\u3067\u3059\u3002<\/p>\n

\u56de\u907f\u7b56\u3068\u3057\u3066\u3001\u5f71\u97ff\u3092\u53d7\u3051\u305f\u30e6\u30fc\u30b6\u30fc\u306fMicrosoft Edge\u30d6\u30e9\u30a6\u30b6\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u73fe\u72b6:\u3053\u306e\u554f\u984c\u306f\u3001\u4e00\u90e8\u306e\u30d6\u30e9\u30a6\u30b6\u304c\u7279\u5b9a\u306e\u8a8d\u8a3c\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u691c\u8a3c\u3059\u308b\u65b9\u6cd5\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u696d\u754c\u5168\u4f53\u306e\u8a8d\u8a3c\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5909\u66f4\u306b\u95a2\u9023\u3057\u3066\u3044\u308b\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u7591\u3063\u3066\u3044\u307e\u3059\u3002\u95a2\u4fc2\u3092\u78ba\u8a8d\u3057\u3001\u9069\u5207\u306a\u6b21\u306e\u30b9\u30c6\u30c3\u30d7\u3092\u6c7a\u3081\u308b\u305f\u3081\u306b\u53d6\u308a\u7d44\u3093\u3067\u3044\u307e\u3059\u3002<\/p>\n

\u5f71\u97ff\u7bc4\u56f2:Google Chrome\u3084Mozilla Firefox\u3092\u901a\u3058\u3066Microsoft 365\u306e\u30a6\u30a7\u30d6\u30b5\u30fc\u30d3\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3059\u308b\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306f\u5f71\u97ff\u3092\u53d7\u3051\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u60c5\u5831\u306f\u8abf\u67fb\u304c\u9032\u3080\u306b\u3064\u308c\u3066\u66f4\u65b0\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u6b21\u56de\u66f4\u65b0\u65e5:2026\u5e744\u670816\u65e5\u6728\u66dc\u65e5 \u5348\u5f8c1\u6642 UTC<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

MO1281730 | Microsoft 365 suite | Users may be unable to access Microsoft 365 web-based services correctly whe […]<\/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-15969","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15969","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=15969"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15969\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=15969"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=15969"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=15969"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}