--- title: Microsoft 365 outage drags on, but things are improving description: Microsoft's multi-day Microsoft 365 outage, caused by a misconfiguration in a core authentication component, is entering its second day with partial recovery... canonical: https://daily.dev/posts/microsoft-365-outage-drags-on-but-things-are-improving-tkvddo9us twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Microsoft 365 outage drags on, but things are improving | daily.dev og:description: Microsoft's multi-day Microsoft 365 outage, caused by a misconfiguration in a core authentication component, is entering its second day with partial recovery... og:url: https://daily.dev/posts/microsoft-365-outage-drags-on-but-things-are-improving-tkvddo9us og:image: https://api.daily.dev/og/posts/tkvdDO9Us.png og:image:alt: Microsoft 365 outage drags on, but things are improving og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Microsoft 365 outage drags on, but things are improving **[TechCrunch](https://daily.dev/sources/tc)** · 2 min read · 3 upvotes · 0 comments ## Summary Microsoft's multi-day Microsoft 365 outage, caused by a misconfiguration in a core authentication component, is entering its second day with partial recovery underway. Outlook, SharePoint, Copilot, Teams, Purview, Defender XDR, the Microsoft 365 Admin Center, and Universal Print were all affected. Microsoft says telemetry indicates improving service availability and mail flow, with search functionality also recovering, but the company has not declared the incident fully resolved and is now in an extended monitoring phase. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### Why is Microsoft 365 having an outage affecting Outlook, Teams, and SharePoint? A misconfiguration in a core authentication component used by multiple Microsoft 365 services prevented authentication components from deploying properly to a portion of Microsoft's infrastructure. This caused email delays, failures, and authentication issues in Outlook, along with disruptions to SharePoint, Copilot, Teams, Purview, Defender XDR, the Microsoft 365 Admin Center, and Universal Print, starting with Exchange Online problems. _Track how major cloud outages like this one get diagnosed and resolved by following the incident coverage on daily.dev._ ### Is the Microsoft 365 Outlook outage fully fixed yet? Not fully, though it is improving. As of the second day of the incident, Microsoft reported that mitigation actions were continuing to progress and that telemetry indications remained positive, with mail flow and search functionality showing gradual recovery. The company had not yet declared full resolution and moved into a period of extended monitoring to confirm the fix holds. _Enterprise teams monitoring service reliability can follow ongoing outage updates on daily.dev._ ## Similar posts on daily.dev - [Microsoft 365 outage affects Teams, SharePoint and other services](https://daily.dev/posts/microsoft-365-outage-affects-teams-sharepoint-and-other-services-gi3tmhotf) · BleepingComputer · 0 upvotes · 0 comments - [Microsoft 365 hit by outage, preventing access to emails and files](https://daily.dev/posts/microsoft-365-hit-by-outage-preventing-access-to-emails-and-files-irywo2f8j) · TechCrunch · 0 upvotes · 0 comments - [Microsoft confirms outage affecting search in Microsoft 365 apps](https://daily.dev/posts/microsoft-confirms-outage-affecting-search-in-microsoft-365-apps-kbc6i6lst) · BleepingComputer · 0 upvotes · 0 comments - [Microsoft tests fix for latest hours-long Outlook outage](https://daily.dev/posts/microsoft-tests-fix-for-latest-hours-long-outlook-outage-p9tn5amyy) · TechCrunch · 0 upvotes · 1 comments - [Microsoft blames massive Microsoft 365 outage on maintenance bug](https://daily.dev/posts/microsoft-blames-massive-microsoft-365-outage-on-maintenance-bug-6v6fhc5ky) · BleepingComputer · 1 upvotes · 0 comments --- Tags: [#microsoft](https://daily.dev/tags/microsoft) [View this post on daily.dev](https://daily.dev/posts/microsoft-365-outage-drags-on-but-things-are-improving-tkvddo9us) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Microsoft 365 outage drags on, but things are improving","url":"https://daily.dev/posts/microsoft-365-outage-drags-on-but-things-are-improving-tkvddo9us","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/microsoft-365-outage-drags-on-but-things-are-improving-tkvddo9us"},"datePublished":"2026-09-01T15:27:36.168Z","dateModified":"2026-09-01T15:28:00.296Z","description":"Microsoft's multi-day Microsoft 365 outage, caused by a misconfiguration in a core authentication component, is entering its second day with partial recovery...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/31d2309a48509327ae04661cde841506?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/31d2309a48509327ae04661cde841506?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"TechCrunch","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"TechCrunch","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/tc","url":"https://daily.dev/sources/tc"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/microsoft-365-outage-drags-on-but-things-are-improving-tkvddo9us","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":3},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"microsoft","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"TechCrunch","item":"https://daily.dev/sources/tc"},{"@type":"ListItem","position":3,"name":"Microsoft 365 outage drags on, but things are improving"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/microsoft-365-outage-drags-on-but-things-are-improving-tkvddo9us#faq","mainEntity":[{"@type":"Question","name":"Why is Microsoft 365 having an outage affecting Outlook, Teams, and SharePoint?","acceptedAnswer":{"@type":"Answer","text":"A misconfiguration in a core authentication component used by multiple Microsoft 365 services prevented authentication components from deploying properly to a portion of Microsoft's infrastructure. 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