{"id":24423,"date":"2026-01-19T13:57:37","date_gmt":"2026-01-19T13:57:37","guid":{"rendered":"https:\/\/outbyte.com\/blog\/?p=24423"},"modified":"2026-01-19T13:57:38","modified_gmt":"2026-01-19T13:57:38","slug":"how-to-fix-windows-update-error-0x8007045b","status":"publish","type":"post","link":"https:\/\/outbyte.com\/blog\/how-to-fix-windows-update-error-0x8007045b\/","title":{"rendered":"How to Fix Windows Update Error 0x8007045b?"},"content":{"rendered":"\n<p>Error <code class=\"inline\">0x8007045b<\/code> Windows Update is possible during the process of updating the OS and during the upgrade process. <\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/outbyte.com\/blog\/wp-content\/uploads\/error-0x8007045b-1024x683.png\" alt=\"\" class=\"wp-image-24425\" srcset=\"https:\/\/outbyte.com\/blog\/wp-content\/uploads\/error-0x8007045b-1024x683.png 1024w, https:\/\/outbyte.com\/blog\/wp-content\/uploads\/error-0x8007045b-300x200.png 300w, https:\/\/outbyte.com\/blog\/wp-content\/uploads\/error-0x8007045b-768x512.png 768w, https:\/\/outbyte.com\/blog\/wp-content\/uploads\/error-0x8007045b-1200x800.png 1200w, https:\/\/outbyte.com\/blog\/wp-content\/uploads\/error-0x8007045b.png 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>The error is annoying; however, there are several troubleshooting measures which will most probably fix the issue.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_Windows_error_code_0x8007045b\"><\/span>What is Windows error code 0x8007045b?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Error code <code class=\"inline\">0x8007045B<\/code> often occurs when Windows and its components fail to update. Other major causes are also:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Corrupt system files<\/strong>: Damaged files can disrupt updates, often resulting from tampering or antivirus actions.<\/li>\n\n\n\n<li><strong>Windows Update (WU) issues<\/strong>: Faults with WU can prevent updates. Using the Update Troubleshooter or resetting WU components can help.<\/li>\n\n\n\n<li><strong>Third-party interference<\/strong>: Overprotective antivirus software may block update connections. Disabling real-time protection or uninstalling the antivirus temporarily can resolve this issue.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Solutions_to_Fix_Error_0x8007045b\"><\/span>Solutions to Fix Error 0x8007045b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>As per our expert\u2019s advice, it\u2019s best to follow these solutions chronologically as we\u2019ve designed them to help resolve the issue more efficiently. <\/p>\n\n\n\n<p>Following these solutions will also help you avoid starting with the difficult solution only to solve the issue with the easy one. <\/p>\n\n\n\n<p>Without wasting time, here are the solutions to Windows 10\/11 update error code <code class=\"inline\">0x8007045b<\/code> issue:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Solution_1_Run_Windows_Update_Troubleshooter\"><\/span>Solution 1: Run Windows Update Troubleshooter<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>The built-in Windows Update Troubleshooter identifies and fixes issues with Windows updates. <\/p>\n\n\n\n<p>To access it, open <strong>Settings > Update &amp; Security > Troubleshoot<\/strong>, then select <strong>Windows Update<\/strong> and click <strong>Run the Troubleshooter<\/strong>. <\/p>\n\n\n\n<p>Follow any suggested fixes, then restart your device.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Solution_2_Perform_an_SFC_and_DISM_Scan\"><\/span>Solution 2: Perform an SFC and DISM Scan<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>System file corruption often causes error <code class=\"inline\">0x8007045B<\/code>. Windows 10\/11 includes <strong>SFC<\/strong> and <strong>DISM<\/strong> tools to repair these issues. <strong>SFC<\/strong> scans for damaged files using local copies to restore them, while <strong>DISM<\/strong> fetches healthy versions online for repair.<\/li>\n\n\n\n<li>To use both tools, open <strong>Command Prompt as Administrator<\/strong> and run:<br><code class=\"inline\">Dism.exe \/online \/cleanup-image \/scanhealth<\/code><br><code class=\"inline\">Dism.exe \/online \/cleanup-image \/restorehealth<\/code><\/li>\n\n\n\n<li>After the scan, restart your PC and check if the error is resolved.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Solution_3_Disable_or_Uninstall_Third-Party_Antivirus\"><\/span>Solution 3: Disable or Uninstall Third-Party Antivirus<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>If an antivirus, such as McAfee or Comodo, is too strict, it might block the communication between your computer and the Windows Update servers. You may get error code <code class=\"inline\">0x8007045b<\/code> after that. In this case, try to temporarily disable real-time protection. <\/p>\n\n\n\n<p>If this doesn&#8217;t work, it would be reasonable to uninstall the antivirus at all, as some tools with firewalls built mightn&#8217;t allow the updates when real-time protection is disabled.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>If you still want extra protection, you can switch to a lighter option like <strong><a href=\"https:\/\/outbyte.com\/software\/avarmor\/?m=blog_article_av_pplink&amp;utm_source=outbyte&amp;utm_medium=blog&amp;utm_campaign=article_av_pplink&amp;utm_term=%7Bbtn_text%7D&amp;utm_content=%7Bpage_path%7D\">Outbyte AVarmor<\/a><\/strong>, which adds security without interfering with Windows updates.<\/p>\n<\/blockquote>\n\n\n\n<p>If disabling or uninstalling doesn\u2019t resolve the error, move on to the next troubleshooting step.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Solution_4_Reset_Windows_Update_Services\"><\/span>Solution 4: Reset Windows Update Services<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>To resolve the issue under this scenario, you must reset all of the Windows Services associated with the process. Resetting Windows Update services can resolve configuration issues:<\/p>\n\n\n\n<p>Open Command Prompt as Administrator and type these commands:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code class=\"inline\">net stop wuauserv<\/code><\/li>\n\n\n\n<li><code class=\"inline\">net stop cryptSvc<\/code><\/li>\n\n\n\n<li><code class=\"inline\">net stop bits<\/code><\/li>\n\n\n\n<li><code class=\"inline\">net stop msiserver<\/code><\/li>\n<\/ul>\n\n\n\n<p>Rename update folders with:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code class=\"inline\">ren C:\\Windows\\SoftwareDistribution SoftwareDistribution.old<\/code><\/li>\n\n\n\n<li><code class=\"inline\">ren C:\\Windows\\System32\\catroot2 Catroot2.old<\/code><\/li>\n<\/ul>\n\n\n\n<p>Restart the services with:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code class=\"inline\">net start wuauserv<\/code><\/li>\n\n\n\n<li><code class=\"inline\">net start cryptSvc<\/code><\/li>\n\n\n\n<li><code class=\"inline\">net start bits<\/code><\/li>\n\n\n\n<li><code class=\"inline\">net start msiserver<\/code><\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\"><\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Solution_5_Run_a_Repair_Installation\"><\/span>Solution 5: Run a Repair Installation<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>This is an extreme option and must be your last resort. If all the above fixes did not work, the issue could go deep into some core corruption in a system file. For this, you will need to go for a clean install of Windows, which reinstalls all the elements. <\/p>\n\n\n\n<p>However, it deletes all the information present on your system, so before going ahead with this step, make sure you back up your important documents to external drives. <\/p>\n\n\n\n<p>A clean install reinstalls Windows, resolving any issues that are deeply buried and cannot be fixed with lighter troubleshooting.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Learn more and keep improving your PC:<\/strong><\/p>\n\n\n\n<p><a href=\"https:\/\/outbyte.com\/blog\/how-to-fix-windows-update-error-code-0x8024402c\/\">How to Fix Windows Update Error Code 0x8024402c<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/outbyte.com\/blog\/8-solutions-to-fix-oobekeyboard-errors-in-windows-10-11\/\">8 Solutions to Fix OOBEkeyboard Errors in Windows 10\/11<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/outbyte.com\/blog\/restart-to-repair-drive-errors-keep-showing-up-after-reboot-in-windows-10-11\/\">\u201cRestart to Repair Drive Errors\u201d Keep Showing Up After Reboot in Windows 10\/11<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/outbyte.com\/blog\/how-to-fix-windows-error-code-0x80070652\/\">How to Fix Windows Error Code 0x80070652?<\/a><\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQs\"><\/span>FAQs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>Why does error 0x8007045b occur?<\/strong><\/summary>\n<p>It generally happens due to corruption of system files, interference caused by antivirus programs, or any problem relating to the service at the time of updating Windows.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>What is the easiest fix for error 0x8007045b?<\/strong><\/summary>\n<p>Try running the Windows Update Troubleshooter as a good first point.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>Would some antivirus software result in such an error?<\/strong><\/summary>\n<p>Yes, some antivirus applications obstruct the update procedure and hence result in this error message.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>What if these steps do not work?<\/strong><\/summary>\n<p>You may want to run a repair install to catch any issue that is deeply buried inside.<\/p>\n<\/details>\n\n\n\n<ol class=\"wp-block-list\"><\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Error 0x8007045b Windows Update is possible during the process of updating the OS and during the upgrade process. The error is annoying; however, there are several troubleshooting measures which will most probably fix the issue. What is Windows error code 0x8007045b? Error code 0x8007045B often occurs when Windows and its components fail to update. Other&#8230; <a href=\"https:\/\/outbyte.com\/blog\/how-to-fix-windows-update-error-0x8007045b\/\" target=\"_blank\">Read more.<\/a><\/p>\n","protected":false},"author":27,"featured_media":25755,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,11],"tags":[67,439,525,61],"class_list":["post-24423","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fixes","category-guides","tag-error-code","tag-stepbystep","tag-windows-error","tag-windows-update-error"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Fix Windows Update Error 0x8007045b? - Outbyte Official Blog<\/title>\n<meta name=\"description\" content=\"Fix Windows Update error 0x8007045b with simple, step-by-step solutions. 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