{"id":184791,"date":"2026-01-26T08:56:45","date_gmt":"2026-01-26T13:56:45","guid":{"rendered":"https:\/\/pureinfotech.com\/?p=184791"},"modified":"2026-01-28T12:40:45","modified_gmt":"2026-01-28T17:40:45","slug":"windows-11-january-2026-update-kb5074109-issues","status":"publish","type":"post","link":"https:\/\/pureinfotech.com\/windows-11-january-2026-update-kb5074109-issues\/","title":{"rendered":"Windows 11 update KB5074109 has been a disaster \u2013 List of major issues"},"content":{"rendered":"<ul class=\"sum\">\n<li>The January 2026 Security Update KB5074109 for Windows 11 introduced multiple critical regressions despite being a security-only release.<\/li>\n<li>Emergency Out-of-band updates KB5077744 and KB5078127 fixed some, but not all, reported problems.<\/li>\n<li>Community reports revealed deeper instability, including graphics problems, boot failures, and broken system tools.<\/li>\n<\/ul>\n<p>The January 2026 Security Update for <a href=\"https:\/\/pureinfotech.com\/tag\/windows-11\">Windows 11<\/a> was expected to be routine. No new features, no visible changes, just the usual monthly security fixes. Instead, the <a href=\"https:\/\/pureinfotech.com\/kb5074109-windows-11-january-2025-update\/\">quality update KB5074109 (build 26200.7623)<\/a> quickly turned into one of the most problematic updates in recent months.<\/p>\n<p>Released on January 13, 2026, the update began generating complaints almost immediately. What followed was a growing list of confirmed bugs, user reports, and official acknowledgements that ultimately pushed many users to uninstall the update entirely.<\/p>\n<h2>Microsoft confirms multiple issues in KB5074109<\/h2>\n<p>One known issue involved Remote Desktop sign-in failures, where users were repeatedly prompted for credentials but could not authenticate. This issue directly affected Azure Virtual Desktop (AVD) and Windows 365, causing significant disruption for enterprises and remote workers.<\/p>\n<p>Another confirmed bug caused applications to freeze or become unresponsive when saving files directly to cloud storage, including OneDrive and Dropbox. For users who rely on cloud-first workflows, this turned routine file operations into a frustrating experience.<\/p>\n<p><a href=\"https:\/\/support.microsoft.com\/en-us\/office\/classic-outlook-profiles-with-pop-accounts-and-psts-hang-after-windows-updates-on-january-13-2026-590fe356-ecc2-49f4-b9e3-bd39fafa58f6\" target=\"_blank\" rel=\"noopener\">Microsoft also acknowledged<\/a> a serious issue affecting classic Outlook profiles using POP accounts and PST files. After installing KB5074109, Outlook could freeze, fail to open entirely, or hang silently in the background.<\/p>\n<p>In this case, they went further and recommended uninstalling the update as one of the workarounds.<\/p>\n<p>Microsoft <a href=\"https:\/\/support.microsoft.com\/en-us\/topic\/january-13-2026-kb5074109-os-builds-26200-7623-and-26100-7623-3ec427dd-6fc4-4c32-a471-83504dd081cb\" target=\"_blank\" rel=\"noopener\">noted<\/a> these issues on its support page. As of the time of this writing, these issues have been fixed through the Out-of-band updates <a href=\"https:\/\/pureinfotech.com\/kb5077744-kb5077797-fix-shutdown-remote-desktop-bugs-windows-11\/\">KB5077744<\/a> and <a href=\"https:\/\/pureinfotech.com\/kb5078127-fixes-issues-windows-11\/\">KB5078127<\/a>.<\/p>\n    <div class=\"responsive-youtube-container\">\n        <iframe\n            src=\"https:\/\/www.youtube.com\/embed\/YTN5SAO-kPA?rel=0&showinfo=0\"\n            frameborder=\"0\"\n            allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\"\n            allowfullscreen\n            loading=\"lazy\"\n        ><\/iframe>\n    <\/div>\n<h2>Community feedback exposes issues beyond Microsoft&#8217;s list<\/h2>\n<p>Beyond the officially known issues, user reports painted an even more troubling picture with the January 2026 Security Update.<\/p>\n<p>A small number of users on <a href=\"https:\/\/www.reddit.com\/r\/Windows11\/comments\/1qbym1c\/comment\/nzem1q2\/\" target=\"_blank\" rel=\"noopener\">Reddit<\/a> and <a href=\"https:\/\/learn.microsoft.com\/en-us\/answers\/questions\/5708599\/windows-11-pro-security-update-kb5074109-messed-up\" target=\"_blank\" rel=\"noopener\">Microsoft forums<\/a> reported black screens and severe frame drops, particularly on systems using NVIDIA graphics cards.<\/p>\n<section class=\"custom-related-posts-wrapper\"><span class=\"custom-related-posts-heading\">Related<\/span><div class=\"custom-related-posts-container\"><a href=\"https:\/\/pureinfotech.com\/kb5077181-windows-11-february-2026-update\/\" class=\"custom-related-post-item\" data-umami-event=\"related_inpost_clicked\" data-umami-event-name=\"KB5077181 (build 26200.7840) for Windows 11 drops as the February 2026 update\"><div class=\"custom-related-post-thumbnail\"><img src=\"https:\/\/i0.wp.com\/pureinfotech.com\/wp-content\/uploads\/2026\/01\/kb5077181-windows-11-february-2026-update-hero_.webp?fit=300%2C188&#038;quality=78&#038;strip=all&#038;ssl=1\" alt=\"KB5077181 (build 26200.7840) for Windows 11 drops as the February 2026 update\" decoding=\"async\" loading=\"lazy\" \/><\/div><span class=\"custom-related-post-title\">KB5077181 (build 26200.7840) for Windows 11 drops as the February 2026 update<\/span><\/a><a href=\"https:\/\/pureinfotech.com\/windows-11-kb5074109-nvidia-issue-black-screens-fix\/\" class=\"custom-related-post-item\" data-umami-event=\"related_inpost_clicked\" data-umami-event-name=\"Windows 11 January update (KB5074109) breaks NVIDIA GPUs (fix included)\"><div class=\"custom-related-post-thumbnail\"><img src=\"https:\/\/i0.wp.com\/pureinfotech.com\/wp-content\/uploads\/2026\/01\/windows11-kb5074109-nvidia-gpu-problem-hero.webp?fit=300%2C188&#038;quality=78&#038;strip=all&#038;ssl=1\" alt=\"Windows 11 January update (KB5074109) breaks NVIDIA GPUs (fix included)\" decoding=\"async\" loading=\"lazy\" \/><\/div><span class=\"custom-related-post-title\">Windows 11 January update (KB5074109) breaks NVIDIA GPUs (fix included)<\/span><\/a><\/div><\/section>\n<p><a href=\"https:\/\/learn.microsoft.com\/en-us\/answers\/questions\/5708369\/2026-01-security-update-(kb5074109)-(26200-7623)-c\" target=\"_blank\" rel=\"noopener\">Others experienced<\/a> boot failures or unresponsive systems during startup, with computers freezing before reaching the desktop. In some cases, systems only returned to normal after uninstalling the update.<\/p>\n<p>On Reddit, one user described <a href=\"https:\/\/www.reddit.com\/r\/Windows11\/comments\/1qjs01a\/regarding_january_security_update_kb5074109_issues\/\" target=\"_blank\" rel=\"noopener\">severe system instability<\/a>, including frequent browser crashes and thousands of critical errors logged in Event Viewer. That same post included detailed steps for removing the update, after which system stability was reportedly restored.<\/p>\n<p>Even more concerning were reports of <a href=\"https:\/\/www.reddit.com\/r\/pcmasterrace\/comments\/1qcy5sp\/pc_rebooting_after_latest_windows_11_kb5074109\/\" target=\"_blank\" rel=\"noopener\">unexpected reboots and Black Screen of Death errors<\/a>, sometimes triggered by the graphics card workloads and sometimes occurring during normal startup. Once again, uninstalling KB5074109 appeared to resolve the issue.<\/p>\n<p>The update also broke core components in the operating system. Some users reported that File Explorer ignored customization settings defined in <code>desktop.ini<\/code>, breaking folder views and visual preferences.<\/p>\n<p><a href=\"https:\/\/www.reddit.com\/r\/WindowsLTSC\/comments\/1qe3qyc\/very_specific_problem_after_update_kb5074109\/\" target=\"_blank\" rel=\"noopener\">Others noticed<\/a> that Task Manager would freeze or hang when certain applications were open, making it difficult to diagnose performance issues or terminate misbehaving processes.<\/p>\n<p>In addition, there have been reports from built-in apps such as Notepad and Snipping Tool that refused to launch, displaying error <strong>0x803F8001<\/strong>. Users also reported that Windows 11 could no longer <a href=\"https:\/\/pureinfotech.com\/format-drive-fat32-windows\/\">format USB flash drives<\/a> using the FAT32 file system, a basic function that should never break in a security update.<\/p>\n<h2>Error 0x800F0905 complicates the uninstall of the update<\/h2>\n<p>Ironically, even removing the update became a challenge for some users. Attempts to uninstall KB5074109 failed with error <strong>0x800F0905<\/strong>, leaving affected systems stuck in a broken state.<\/p>\n<section class=\"custom-related-posts-wrapper\"><span class=\"custom-related-posts-heading\">Related<\/span><div class=\"custom-related-posts-container\"><a href=\"https:\/\/pureinfotech.com\/uninstall-update-windows-11\/\" class=\"custom-related-post-item\" data-umami-event=\"related_inpost_clicked\" data-umami-event-name=\"5 Ways to uninstall an update manually on Windows 11 (2026)\"><div class=\"custom-related-post-thumbnail\"><img src=\"https:\/\/i0.wp.com\/pureinfotech.com\/wp-content\/uploads\/2025\/02\/windows-11-uninstall-updates-hero.webp?fit=300%2C188&#038;quality=78&#038;strip=all&#038;ssl=1\" alt=\"5 Ways to uninstall an update manually on Windows 11 (2026)\" decoding=\"async\" loading=\"lazy\" \/><\/div><span class=\"custom-related-post-title\">5 Ways to uninstall an update manually on Windows 11 (2026)<\/span><\/a><\/div><\/section>\n<p>In those cases, users were forced to rely on <a href=\"https:\/\/pureinfotech.com\/create-restore-point-windows-11\/\">System Restore<\/a> using a previous restore point or to restore the system from a <a href=\"https:\/\/pureinfotech.com\/backup-windows-11-external-usb-drive\/\">full backup<\/a> to regain stability, as their only way to remove the update.<\/p>\n<p>Whether these issues affect a small percentage of systems or represent a broader quality failure is difficult to determine. What is clear is that KB5074109 generated an unusually high volume of complaints across Microsoft&#8217;s own forums, Reddit, and social media, many of which were resolved only by uninstalling the update.<\/p>\n<p>If you have not installed the January 2026 Security Update yet, the safest approach is to pause updates and wait until the company permanently fixes these problems.<\/p>\n<p>Personally, I prefer to <a href=\"https:\/\/pureinfotech.com\/disable-automatic-updates-windows-11\/\">disable automatic updates<\/a> and install them manually once it&#8217;s clear they are safe and stable. This update is a reminder of why that approach still makes sense.<\/p>\n<p><strong>Have you experienced issues with KB5074109 on your system?<\/strong> Let me know in the comments.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A routine Windows 11 security update spirals into one of the most unstable patches Microsoft has released in months.<\/p>\n","protected":false},"author":2,"featured_media":184799,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"footnotes":""},"categories":[2426,23],"tags":[2715,2576,2747],"class_list":["post-184791","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-features","category-windows","tag-windows-11","tag-windows-help","tag-windows-update"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - 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