{"id":18743,"date":"2026-09-26T10:01:32","date_gmt":"2026-09-26T01:01:32","guid":{"rendered":"https:\/\/m365jp.net\/?p=18743"},"modified":"2026-09-26T10:04:41","modified_gmt":"2026-09-26T01:04:41","slug":"servicedegradation-ex1479349-exchange-online-users-may-be-unable-to-reply-or-reply-all-to-email-messages-sent-to-microsoft-365-groups-in-exchange-online-3","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-09-26-servicedegradation-ex1479349-exchange-online-users-may-be-unable-to-reply-or-reply-all-to-email-messages-sent-to-microsoft-365-groups-in-exchange-online-3","title":{"rendered":"[serviceDegradation] EX1479349 | Exchange Online | Users may be unable to reply or reply-all to email messages sent to Microsoft 365 groups in Exchange Online"},"content":{"rendered":"
\n
\n
\n\n\n\n
EX1479349 | Exchange Online | Users may be unable to reply or reply-all to email messages sent to Microsoft 365 groups in Exchange Online<\/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 reply or reply-all to email messages sent to Microsoft 365 groups in Exchange Online.<\/td>\n<\/tr>\n
Last Updated<\/th>\n09\/26\/2026 00:24:06<\/td>\n<\/tr>\n
Start Time<\/th>\n09\/25\/2026 15:52:36<\/td>\n<\/tr>\n
End Time<\/th>\n<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Users may be unable to reply or reply-all to email messages sent to Microsoft 365 groups in Exchange Online <\/p>\n

User impact: Users may be unable to reply or reply-all to email messages sent to Microsoft 365 groups in Exchange Online. <\/p>\n

More info: As a temporary alternative, impacted users may reply or reply all to email messages through user inboxes. <\/p>\n

Current status: We’ve completed the validation of our planned fixes and are completing the final stages to prepare them for deployment. We anticipate that users will see progressive relief beginning Monday, September 28, 2026, up to our planned remediation date of Friday, October 2, 2026. <\/p>\n

Scope of impact: This issue impacts any user attempting to reply or reply-all to email messages sent to Microsoft 365 groups in Exchange Online. This information may be updated as our investigation continues. <\/p>\n

Next update by: Tuesday, September 29, 2026, at 1:00 AM UTC<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb:\u30e6\u30fc\u30b6\u30fc\u306fExchange Online\u3067Microsoft 365\u30b0\u30eb\u30fc\u30d7\u306b\u9001\u4fe1\u3055\u308c\u305f\u30e1\u30fc\u30eb\u306b\u8fd4\u4fe1\u307e\u305f\u306f\u5168\u3066\u8fd4\u4fe1\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059 <\/p>\n

\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff:Exchange Online\u3067Microsoft 365\u30b0\u30eb\u30fc\u30d7\u306b\u9001\u4fe1\u3055\u308c\u305f\u30e1\u30fc\u30eb\u306b\u8fd4\u4fe1\u307e\u305f\u306f\u5168\u54e1\u8fd4\u4fe1\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n

\u8a73\u7d30\u60c5\u5831:\u4e00\u6642\u7684\u306a\u4ee3\u66ff\u3068\u3057\u3066\u3001\u5f71\u97ff\u3092\u53d7\u3051\u305f\u30e6\u30fc\u30b6\u30fc\u306f\u30e6\u30fc\u30b6\u30fc\u306e\u53d7\u4fe1\u7bb1\u3092\u901a\u3058\u3066\u30e1\u30fc\u30eb\u306b\u8fd4\u4fe1\u307e\u305f\u306f\u8fd4\u4fe1\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n

\u73fe\u72b6:\u8a08\u753b\u4e2d\u306e\u4fee\u6b63\u306e\u691c\u8a3c\u3092\u5b8c\u4e86\u3057\u3001\u5c0e\u5165\u6e96\u5099\u306e\u6700\u7d42\u6bb5\u968e\u3092\u9032\u3081\u3066\u3044\u307e\u3059\u3002\u30e6\u30fc\u30b6\u30fc\u306f2026\u5e749\u670828\u65e5(\u6708)\u304b\u3089\u30012026\u5e7410\u67082\u65e5\u91d1\u66dc\u65e5\u306e\u4e88\u5b9a\u4fee\u5fa9\u65e5\u307e\u3067\u6bb5\u968e\u7684\u306a\u7de9\u548c\u3092\u898b\u3089\u308c\u308b\u3068\u4e88\u60f3\u3057\u3066\u3044\u307e\u3059\u3002 <\/p>\n

\u5f71\u97ff\u7bc4\u56f2:\u3053\u306e\u554f\u984c\u306f\u3001Exchange Online\u3067Microsoft 365\u30b0\u30eb\u30fc\u30d7\u306b\u9001\u4fe1\u3055\u308c\u305f\u30e1\u30fc\u30eb\u306b\u8fd4\u4fe1\u307e\u305f\u306f\u5168\u54e1\u8fd4\u4fe1\u3057\u3088\u3046\u3068\u3059\u308b\u3059\u3079\u3066\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u5f71\u97ff\u3057\u307e\u3059\u3002\u8abf\u67fb\u304c\u9032\u3080\u306b\u3064\u308c\u3066\u3001\u3053\u306e\u60c5\u5831\u306f\u66f4\u65b0\u3055\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n

\u6b21\u56de\u66f4\u65b0:2026\u5e749\u670829\u65e5\u706b\u66dc\u65e5 \u5348\u524d1\u6642 UTC<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"

EX1479349 | Exchange Online | Users may be unable to reply or reply-all to email messages sent to Microsoft 36 […]<\/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-18743","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/18743","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=18743"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/18743\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=18743"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=18743"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=18743"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}