--- title: Microsoft: Some Windows servers enter reboot loops after... description: Microsoft has confirmed a known issue where Windows domain controllers enter reboot loops due to LSASS crashes after installing the April 2026 security update... canonical: https://daily.dev/posts/microsoft-some-windows-servers-enter-reboot-loops-after-april-patches-pl9mb1vzi twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Microsoft: Some Windows servers enter reboot loops after April patches | daily.dev og:description: Microsoft has confirmed a known issue where Windows domain controllers enter reboot loops due to LSASS crashes after installing the April 2026 security update... og:url: https://daily.dev/posts/microsoft-some-windows-servers-enter-reboot-loops-after-april-patches-pl9mb1vzi og:image: https://api.daily.dev/og/posts/Pl9Mb1vZI.png og:image:alt: Microsoft: Some Windows servers enter reboot loops after April patches 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: Some Windows servers enter reboot loops after April patches **[BleepingComputer](https://daily.dev/sources/bleepingcomputer)** · 2 min read · 0 upvotes · 0 comments ## Summary Microsoft has confirmed a known issue where Windows domain controllers enter reboot loops due to LSASS crashes after installing the April 2026 security update (KB5082063). The problem affects non-Global Catalog domain controllers in environments using Privileged Access Management (PAM), impacting Windows Server 2016 through 2025. Affected servers may restart repeatedly, preventing authentication and directory services from functioning. Microsoft has not yet released a fix and advises impacted IT administrators to contact Microsoft Support for Business for mitigation steps. This follows a pattern of similar domain controller issues triggered by April security updates in 2024 and 2025. ## Full article daily.dev links to this article rather than hosting it. 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Microsoft update knocks out key enterprise functions](https://daily.dev/posts/security-patch-or-self-inflicted-ddos-microsoft-update-knocks-out-key-enterprise-functions-kqe5yk9li) · CSO Online · 0 upvotes · 0 comments --- Tags: [#microsoft](https://daily.dev/tags/microsoft) [View this post on daily.dev](https://daily.dev/posts/microsoft-some-windows-servers-enter-reboot-loops-after-april-patches-pl9mb1vzi) ```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: Some Windows servers enter reboot loops after April patches","url":"https://daily.dev/posts/microsoft-some-windows-servers-enter-reboot-loops-after-april-patches-pl9mb1vzi","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/microsoft-some-windows-servers-enter-reboot-loops-after-april-patches-pl9mb1vzi"},"datePublished":"2026-04-17T08:00:41.157Z","dateModified":"2026-04-17T08:01:08.262Z","description":"Microsoft has confirmed a known issue where Windows domain controllers enter reboot loops due to LSASS crashes after installing the April 2026 security update...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/0b6d17bce6986b07e53400df50342205?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/0b6d17bce6986b07e53400df50342205?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"BleepingComputer","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":"BleepingComputer","logo":"https://media.daily.dev/image/upload/s--as8nJ3qy--/f_auto,q_auto/v1774959951/logos/bleepingcomputer?_a=BAMAMiWQ0","url":"https://daily.dev/sources/bleepingcomputer"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/microsoft-some-windows-servers-enter-reboot-loops-after-april-patches-pl9mb1vzi","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@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":"BleepingComputer","item":"https://daily.dev/sources/bleepingcomputer"},{"@type":"ListItem","position":3,"name":"Microsoft: Some Windows servers enter reboot loops after April patches"}]} ```