{"id":15985,"date":"2026-04-17T05:01:19","date_gmt":"2026-04-16T20:01:19","guid":{"rendered":"https:\/\/m365jp.net\/?p=15985"},"modified":"2026-04-17T05:01:37","modified_gmt":"2026-04-16T20:01:37","slug":"servicedegradation-ex1275040-exchange-online-users-may-be-unable-to-download-or-open-email-attachments-in-outlook-on-the-web-8","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-8","title":{"rendered":"[serviceDegradation] EX1275040 | Exchange Online | Users may be unable to download or open email attachments in Outlook on the web"},"content":{"rendered":"
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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
\n\n\n\n\n\n\n\n\n\n\n
Status<\/th>\nserviceDegradation<\/td>\n<\/tr>\n
Classification<\/th>\nadvisory<\/td>\n<\/tr>\n
User Impact<\/th>\nUsers may be unable to download or open email attachments in Outlook on the web.<\/td>\n<\/tr>\n
Last Updated<\/th>\n04\/16\/2026 19:07:59<\/td>\n<\/tr>\n
Start Time<\/th>\n04\/09\/2026 04:00:00<\/td>\n<\/tr>\n
End Time<\/th>\n<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Users may be unable to download or open email attachments in Outlook on the web<\/p>\n

User impact: Users may be unable to download or open email attachments in Outlook on the web.<\/p>\n

Current status: While we were in the process of analyzing a potential token failure, system monitoring indicated that the service had started returning to normal health. Per service health telemetry, we see that this impact has started to recover gradually for impacted users, however we haven’t reached full remediation for this event. We’re reviewing the timeline of this impact start and recovery to isolate whether any specific change caused this event and isolate a means to expedite a full mitigation for the remaining impacted users.<\/p>\n

Scope of impact: Some users attempting to download or open email attachments in Outlook on the web may be impacted.<\/p>\n

Start time: Thursday, April 9, 2026, at 4:00 AM UTC<\/p>\n

Next update by: Friday, April 17, 2026, at 12:00 AM UTC<\/td>\n<\/tr>\n

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\u958b\u59cb\u6642\u9593:2026\u5e744\u67089\u65e5\u6728\u66dc\u65e5 \u5348\u524d4\u6642 UTC<\/p>\n

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EX1275040 | Exchange Online | Users may be unable to download or open email attachments in Outlook on the web […]<\/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-15985","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15985","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=15985"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15985\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=15985"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=15985"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=15985"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}