{"id":15994,"date":"2026-04-17T08:00:58","date_gmt":"2026-04-16T23:00:58","guid":{"rendered":"https:\/\/m365jp.net\/?p=15994"},"modified":"2026-04-17T08:01:30","modified_gmt":"2026-04-16T23:01:30","slug":"servicedegradation-ex1275040-exchange-online-users-may-be-unable-to-download-or-open-email-attachments-in-outlook-on-the-web-9","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-04-17-servicedegradation-ex1275040-exchange-online-users-may-be-unable-to-download-or-open-email-attachments-in-outlook-on-the-web-9","title":{"rendered":"[serviceDegradation] EX1275040 | Exchange Online | Users may be unable to download or open email attachments in Outlook on the web"},"content":{"rendered":"<div class=\"postie-post\">\n<div>\n<hr>\n<table id=\"section\">\n<tbody>\n<tr>\n<th width=\"95%\">EX1275040 | Exchange Online | Users may be unable to download or open email attachments in Outlook on the web<\/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 download or open email attachments in Outlook on the web.<\/td>\n<\/tr>\n<tr>\n<th>Last Updated<\/th>\n<td>04\/16\/2026 22:46:21<\/td>\n<\/tr>\n<tr>\n<th>Start Time<\/th>\n<td>04\/09\/2026 04:00:00<\/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 download or open email attachments in Outlook on the web<\/p>\n<p>  User impact: Users may be unable to download or open email attachments in Outlook on the web.<\/p>\n<p>  Current status: While we&#8217;re continuing our analysis of potential authentication issues, the restarted machines have seen significant improvement. We&#8217;re in the process of initiating safe restarts on all the affected infrastructure to remediate impact.<\/p>\n<p>  Scope of impact: Some users attempting to download or open email attachments in Outlook on the web may be impacted. This information may be updated as our investigation continues.<\/p>\n<p>  Start time: Thursday, April 9, 2026, at 4:00 AM UTC<\/p>\n<p>  Next update by: Friday, April 17, 2026, at 2:30 AM UTC<\/td>\n<\/tr>\n<tr>\n<th>Machine Translation<\/th>\n<td>\u30bf\u30a4\u30c8\u30eb:\u30e6\u30fc\u30b6\u30fc\u306f\u30a6\u30a7\u30d6\u4e0a\u306eOutlook\u3067\u30e1\u30fc\u30eb\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u307e\u305f\u306f\u958b\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059<\/p>\n<p>  \u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff:\u30e6\u30fc\u30b6\u30fc\u306f\u30a6\u30a7\u30d6\u4e0a\u3067Outlook\u3067\u30e1\u30fc\u30eb\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u307e\u305f\u306f\u958b\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>  \u73fe\u72b6:\u8a8d\u8a3c\u554f\u984c\u306e\u5206\u6790\u3092\u7d99\u7d9a\u3057\u3066\u3044\u308b\u9593\u3001\u518d\u8d77\u52d5\u3057\u305f\u30de\u30b7\u30f3\u306f\u5927\u5e45\u306a\u6539\u5584\u304c\u898b\u3089\u308c\u307e\u3057\u305f\u3002\u5f71\u97ff\u3092\u53d7\u3051\u305f\u3059\u3079\u3066\u306e\u30a4\u30f3\u30d5\u30e9\u3067\u5b89\u5168\u306a\u518d\u8d77\u52d5\u3092\u958b\u59cb\u3057\u3001\u5f71\u97ff\u3092\u89e3\u6d88\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>  \u5f71\u97ff\u7bc4\u56f2:\u30a6\u30a7\u30d6\u4e0a\u3067Outlook\u3067\u30e1\u30fc\u30eb\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u307e\u305f\u306f\u958b\u3053\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<p>  \u958b\u59cb\u6642\u9593:2026\u5e744\u67089\u65e5\u6728\u66dc\u65e5 \u5348\u524d4\u6642 UTC<\/p>\n<p>  \u6b21\u56de\u66f4\u65b0:2026\u5e744\u670817\u65e5\u91d1\u66dc\u65e5 \u5348\u524d2\u664230\u5206 UTC<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>EX1275040 | Exchange Online | Users may be unable to download or open email attachments in Outlook on the web  [&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-15994","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15994","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=15994"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15994\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=15994"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=15994"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=15994"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}