{"id":16241,"date":"2026-05-03T00:00:50","date_gmt":"2026-05-02T15:00:50","guid":{"rendered":"https:\/\/m365jp.net\/?p=16241"},"modified":"2026-05-03T00:03:02","modified_gmt":"2026-05-02T15:03:02","slug":"servicerestored-ex1281449-exchange-online-users-may-be-unable-to-reply-to-email-messages-from-a-pop-up-window-in-outlook-on-the-web-2","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-05-03-servicerestored-ex1281449-exchange-online-users-may-be-unable-to-reply-to-email-messages-from-a-pop-up-window-in-outlook-on-the-web-2","title":{"rendered":"[serviceRestored] EX1281449 | Exchange Online | Users may be unable to reply to email messages from a pop-up window in Outlook on the web"},"content":{"rendered":"
\n
\n
\n\n\n\n
EX1281449 | Exchange Online | Users may be unable to reply to email messages from a pop-up window in Outlook on 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 may have been unable reply to email messages from a pop-up window in Outlook on the web.<\/td>\n<\/tr>\n
Last Updated<\/th>\n05\/02\/2026 14:34:18<\/td>\n<\/tr>\n
Start Time<\/th>\n04\/14\/2026 02:00:00<\/td>\n<\/tr>\n
End Time<\/th>\n05\/01\/2026 22:09:35<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Users may be unable to reply to email messages from a pop-up window in Outlook on the web<\/p>\n

User impact: Users may have been unable reply to email messages from a pop-up window in Outlook on the web.<\/p>\n

More info: This issue may have occurred within any browser and impacted single reply and reply all functions. While we were focused on remediation, user testing indicated that by changing browser-specific pop-up settings to ensure that pop-ups were allowed, affected users may have been able to avoid impact.<\/p>\n

Final status: We’ve confirmed through testing with a subset of affected users that the impact has been remediated. Affected users may need to refresh their Outlook on the web session to have the changes saturate.<\/p>\n

Scope of impact: Users attempting to reply to email messages from a pop-up window in Outlook in the web may have been impacted.<\/p>\n

Start time: Tuesday, April 14, 2026, at 2:00 AM UTC<\/p>\n

End time: Thursday, April 30, 2026, at 3:21 PM UTC<\/p>\n

Root cause: A fix to address an unrelated issue introduced a code issue that\u2019s leading to the impact.<\/p>\n

Next steps:
– We’re reviewing offending fix to understand why impact to reply functionality wasn’t caught during the testing phase. This will allow us to drive service improvements by proactively identifying similar issues in the future and improve our update testing processes.<\/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\u30a6\u30a7\u30d6\u4e0a\u306eOutlook\u306e\u30dd\u30c3\u30d7\u30a2\u30c3\u30d7\u30a6\u30a3\u30f3\u30c9\u30a6\u304b\u3089\u30e1\u30fc\u30eb\u306b\u8fd4\u4fe1\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\u30a6\u30a7\u30d6\u4e0a\u306eOutlook\u306e\u30dd\u30c3\u30d7\u30a2\u30c3\u30d7\u30a6\u30a3\u30f3\u30c9\u30a6\u304b\u3089\u306e\u30e1\u30fc\u30eb\u306b\u8fd4\u4fe1\u3067\u304d\u306a\u304b\u3063\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u8a73\u7d30\u60c5\u5831:\u3053\u306e\u554f\u984c\u306f\u3069\u306e\u30d6\u30e9\u30a6\u30b6\u3067\u3082\u767a\u751f\u3057\u3001\u5358\u4e00\u8fd4\u4fe1\u304a\u3088\u3073\u5168\u6a5f\u80fd\u306b\u5f71\u97ff\u3092\u53ca\u307c\u3057\u307e\u3057\u305f\u3002\u79c1\u305f\u3061\u306f\u4fee\u6b63\u306b\u6ce8\u529b\u3057\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u30e6\u30fc\u30b6\u30fc\u30c6\u30b9\u30c8\u3067\u306f\u30d6\u30e9\u30a6\u30b6\u56fa\u6709\u306e\u30dd\u30c3\u30d7\u30a2\u30c3\u30d7\u8a2d\u5b9a\u3092\u5909\u66f4\u3057\u3066\u30dd\u30c3\u30d7\u30a2\u30c3\u30d7\u3092\u8a31\u53ef\u3059\u308b\u3053\u3068\u3067\u3001\u5f71\u97ff\u3092\u56de\u907f\u3067\u304d\u305f\u53ef\u80fd\u6027\u304c\u3042\u308b\u3053\u3068\u304c\u793a\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n

\u6700\u7d42\u72b6\u6cc1:\u5f71\u97ff\u3092\u53d7\u3051\u305f\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u3092\u5bfe\u8c61\u306b\u30c6\u30b9\u30c8\u3092\u884c\u3044\u3001\u5f71\u97ff\u306f\u662f\u6b63\u3055\u308c\u305f\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002\u5f71\u97ff\u3092\u53d7\u3051\u305f\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u5909\u66f4\u304c\u5b8c\u5168\u306b\u98fd\u548c\u72b6\u614b\u306b\u306a\u308b\u3088\u3046\u306bOutlook on Web\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u66f4\u65b0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n

\u5f71\u97ff\u7bc4\u56f2:\u30a6\u30a7\u30d6\u4e0a\u306eOutlook\u306e\u30dd\u30c3\u30d7\u30a2\u30c3\u30d7\u30a6\u30a3\u30f3\u30c9\u30a6\u304b\u3089\u30e1\u30fc\u30eb\u306b\u8fd4\u4fe1\u3057\u3088\u3046\u3068\u3059\u308b\u30e6\u30fc\u30b6\u30fc\u304c\u5f71\u97ff\u3092\u53d7\u3051\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u958b\u59cb\u6642\u9593:2026\u5e744\u670814\u65e5\u706b\u66dc\u65e5 \u5348\u524d2:00 UTC<\/p>\n

\u7d42\u4e86\u6642\u523b:2026\u5e744\u670830\u65e5\u6728\u66dc\u65e5 15:21 UTC<\/p>\n

\u6839\u672c\u539f\u56e0:\u7121\u95a2\u4fc2\u306a\u554f\u984c\u306b\u5bfe\u51e6\u3059\u308b\u305f\u3081\u306e\u4fee\u6b63\u304c\u30b3\u30fc\u30c9\u306e\u554f\u984c\u3092\u5f15\u304d\u8d77\u3053\u3057\u3001\u5f71\u97ff\u3092\u5f15\u304d\u8d77\u3053\u3057\u307e\u3057\u305f\u3002<\/p>\n

\u6b21\u306e\u30b9\u30c6\u30c3\u30d7:
– \u30c6\u30b9\u30c8\u6bb5\u968e\u3067\u8fd4\u4fe1\u6a5f\u80fd\u3078\u306e\u5f71\u97ff\u304c\u691c\u51fa\u3055\u308c\u306a\u304b\u3063\u305f\u7406\u7531\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u3001\u554f\u984c\u306e\u3042\u308b\u4fee\u6b63\u3092\u30ec\u30d3\u30e5\u30fc\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5c06\u6765\u7684\u306b\u540c\u69d8\u306e\u554f\u984c\u3092\u7a4d\u6975\u7684\u306b\u7279\u5b9a\u3057\u3001\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u30c6\u30b9\u30c8\u30d7\u30ed\u30bb\u30b9\u3092\u6539\u5584\u3059\u308b\u3053\u3068\u3067\u30b5\u30fc\u30d3\u30b9\u6539\u5584\u3092\u63a8\u9032\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u3053\u308c\u304c\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":"

EX1281449 | Exchange Online | Users may be unable to reply to email messages from a pop-up window in Outlook o […]<\/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-16241","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/16241","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=16241"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/16241\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=16241"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=16241"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=16241"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}