{"id":241526,"date":"2026-07-25T04:13:01","date_gmt":"2026-07-25T09:13:01","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2026\/07\/microsoft-blames-massive-microsoft-365-outage-on-maintenance-bug"},"modified":"2026-07-25T04:13:01","modified_gmt":"2026-07-25T09:13:01","slug":"microsoft-blames-massive-microsoft-365-outage-on-maintenance-bug","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2026\/07\/microsoft-blames-massive-microsoft-365-outage-on-maintenance-bug","title":{"rendered":"Microsoft blames massive Microsoft 365 outage on maintenance bug"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/microsoft-blames-massive-microsoft-365-outage-on-maintenance-bug.jpg\"><\/a><\/p>\n<p>Microsoft says a bug in its automated network maintenance request system caused Thursday\u2019s massive outage by mistakenly removing IP routes from more devices than intended, disrupting Azure and Microsoft 365 services.<\/p>\n<p>The outage began at 10:44 AM ET on Thursday, July 23, and mostly affected customers accessing Microsoft 365 services through network infrastructure connected to Microsoft\u2019s West US Azure region.<\/p>\n<p>At 11:11 AM ET, Downdetector had recorded 2,403 outage reports, sharply above its normal baseline of 29. SharePoint accounted for 78% of the complaints, followed by Excel at 11% and the Microsoft 365 Admin Center at 6%.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Microsoft says a bug in its automated network maintenance request system caused Thursday\u2019s massive outage by mistakenly removing IP routes from more devices than intended, disrupting Azure and Microsoft 365 services. The outage began at 10:44 AM ET on Thursday, July 23, and mostly affected customers accessing Microsoft 365 services through network infrastructure connected to [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,6],"tags":[],"class_list":["post-241526","post","type-post","status-publish","format-standard","hentry","category-futurism","category-robotics-ai"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/241526","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=241526"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/241526\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=241526"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=241526"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=241526"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}