{"id":15938,"date":"2026-04-16T00:01:01","date_gmt":"2026-04-15T15:01:01","guid":{"rendered":"https:\/\/m365jp.net\/?p=15938"},"modified":"2026-04-16T00:01:43","modified_gmt":"2026-04-15T15:01:43","slug":"servicedegradation-ex1279879-exchange-online-users-may-be-unable-to-respond-directly-to-specific-encrypted-email-messages-from-a-shared-mailbox-in-exchange-online","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-04-16-servicedegradation-ex1279879-exchange-online-users-may-be-unable-to-respond-directly-to-specific-encrypted-email-messages-from-a-shared-mailbox-in-exchange-online","title":{"rendered":"[serviceDegradation] EX1279879 | Exchange Online | Users may be unable to respond directly to specific encrypted email messages from a shared mailbox in Exchange Online"},"content":{"rendered":"<div class=\"postie-post\">\n<div>\n<hr>\n<table id=\"section\">\n<tbody>\n<tr>\n<th width=\"95%\">EX1279879 | Exchange Online | Users may be unable to respond directly to specific encrypted email messages from a shared mailbox in Exchange Online<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr>\n<table id=\"data\">\n<tbody>\n<tr>\n<th>Status<\/th>\n<td class=\"bad\">serviceDegradation<\/td>\n<\/tr>\n<tr>\n<th>Classification<\/th>\n<td>advisory<\/td>\n<\/tr>\n<tr>\n<th>User Impact<\/th>\n<td>Users may be unable to respond directly to specific encrypted email messages from a shared mailbox in Exchange Online.<\/td>\n<\/tr>\n<tr>\n<th>Last Updated<\/th>\n<td>04\/15\/2026 14:23:15<\/td>\n<\/tr>\n<tr>\n<th>Start Time<\/th>\n<td>04\/14\/2026 19:04:35<\/td>\n<\/tr>\n<tr>\n<th>End Time<\/th>\n<td><\/td>\n<\/tr>\n<tr>\n<th>Latest Message<\/th>\n<td>Title: Users may be unable to respond directly to specific encrypted email messages from a shared mailbox in Exchange Online<\/p>\n<p>  User impact: Users may be unable to respond directly to specific encrypted email messages from a shared mailbox in Exchange Online.<\/p>\n<p>  More info: Affected users see the following error: \u201cThis Message can\u2019t be saved right now. Please try again later.&#8221;<\/p>\n<p>  Affected users can send a new email message to the specific senders as a way to circumvent impact but are unable to respond directly to the existing thread.<\/p>\n<p>  Current status: We\u2019ve reproduced the issue internally and are analyzing these reproductions alongside our service-side data to isolate the root cause and determine a fix.<\/p>\n<p>  Scope of impact: Impact is specific to some users who are served through the affected infrastructure, attempting to respond directly to specific encrypted email messages from a shared mailbox in Exchange Online.<\/p>\n<p>  Next update by: Thursday, April 16, 2026, at 4:00 PM UTC<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>EX1279879 | Exchange Online | Users may be unable to respond directly to specific encrypted email messages fro [&hellip;]<\/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-15938","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15938","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=15938"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15938\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=15938"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=15938"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=15938"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}