{"id":164794,"date":"2024-03-28T05:08:32","date_gmt":"2024-03-28T05:08:32","guid":{"rendered":"https:\/\/www.stellarinfo.com\/blog\/?p=164794"},"modified":"2024-07-31T04:48:18","modified_gmt":"2024-07-31T04:48:18","slug":"fix-lsaiso-exe-high-cpu-usage-windows","status":"publish","type":"post","link":"https:\/\/www.stellarinfo.com\/blog\/fix-lsaiso-exe-high-cpu-usage-windows\/","title":{"rendered":"How to Fix LSAISO.exe High CPU Usage?"},"content":{"rendered":"<?xml encoding=\"utf-8\" ?><?xml encoding=\"utf-8\" ?><p>Windows has added numerous security and cryptographic processes that run in the background to safeguard user data and privacy from malicious attacks. The <strong>LSAISO.exe<\/strong> is one such system process responsible for protecting sensitive user data like account credentials, cryptographic keys, and more.<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"429\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2024\/03\/error-4.jpg\" alt=\"LSAISO.exe High CPU Usage on Windows\" class=\"wp-image-164795 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2024\/03\/error-4.jpg 750w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2024\/03\/error-4-300x172.jpg 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2024\/03\/error-4-150x86.jpg 150w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/figure>\n<\/div><p>Recently, many Windows users witnessed their computers show a sudden spike in CPU usage due to the LSAISO.exe. High CPU usage by this process results in lowered performance, frame drops, stuttering, applications crashing, etc. Because of its unusual activity, many users are also suspecting it to be malware or a crypto miner eating up all the system resources. Let&rsquo;s read more about the <strong>LSAISO.exe high CPU usage<\/strong> issue and methods to fix it.<\/p><h2 class=\"wp-block-heading\" id=\"what-is-lsaiso.exe?\">What is LSAISO.exe?<\/h2><p><strong>LSAISO<\/strong> stands for <strong>Local Security Authority Isolated<\/strong> and runs on Windows 10, Windows Server 2016, and later. LSAISO.exe is a background executable file related to Credential Guard and KeyGuard. This exe runs in the Virtual Secure Mode (VSM) as an <a href=\"https:\/\/learn.microsoft.com\/en-us\/windows\/win32\/procthread\/isolated-user-mode--ium--processes\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Isolated User Mode (IUM) process<\/a>.<\/p><p>As the name suggests, the Virtual Secure Mode, or VSM, is a Hyper-V feature that enables users to create and manage security boundaries, all within the OS. Many Windows security features, such as Device Guard, Credential Guard, etc., are modeled after VSM.<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"746\" height=\"308\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2024\/03\/lsass-trustlet-design.jpg\" alt=\"lsass trustlet design\" class=\"wp-image-164796 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2024\/03\/lsass-trustlet-design.jpg 746w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2024\/03\/lsass-trustlet-design-300x124.jpg 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2024\/03\/lsass-trustlet-design-150x62.jpg 150w\" sizes=\"auto, (max-width: 746px) 100vw, 746px\" \/><\/figure>\n<\/div><p>VSM helps the OS create isolated memory areas to store and process critical system security assets. These isolated areas or modes are known as Virtual Trust Levels or VTLs to protect IUM processes or trustlets like the LSAISO.exe.<\/p><h2 class=\"wp-block-heading\" id=\"what-is-causing-lsaiso.exe-high-cpu-usage?\">What is Causing LSAISO.exe High CPU Usage?<\/h2><p>One or more issues could be causing the Task Manager to show LSAISO.exe high CPU usage. Some of these issues are listed below &ndash;<\/p><ul class=\"wp-block-list\">\n<li>Malware mimicking it<\/li>\n\n\n\n<li>Damaged or corrupted system files<\/li>\n\n\n\n<li>Incorrectly installed updates<\/li>\n\n\n\n<li>Malfunctioning directory domain controllers<\/li>\n\n\n\n<li>Memory leaks<\/li>\n<\/ul><h2 class=\"wp-block-heading\" id=\"methods-to-fix-lsaiso.exe-high-cpu-usage\">Methods to Fix LSAISO.exe High CPU Usage<\/h2><p>If the LSAISO.exe high CPU usage error is causing significant issues with your Windows PC, try the detailed methods mentioned below to fix it.<\/p><h3 class=\"wp-block-heading\" id=\"h-method-1-use-the-process-of-elimination\">Method 1: Use the Process of Elimination<\/h3><p>Sometimes, certain unwanted applications can load third-party DLLs or processes in the LSAISO process. This can cause disproportionate resource allocation between the LSAISO.exe and the third-party processes, leading to LSAISO.exe high CPU usage issue. You can fix this by eliminating the processes and disabling drivers until the CPU usage is back to normal. Here&rsquo;s what to do &ndash;<\/p><ul class=\"wp-block-list\">\n<li>Open the <strong>Task Manager<\/strong> and go to the <strong>Processes<\/strong> tab.<\/li>\n\n\n\n<li>Locate the process of the suspected application and select it.<\/li>\n\n\n\n<li>Right-click on it and click on <strong>End task<\/strong>.<\/li>\n<\/ul><p>Doing this should help you reduce the LSAISO.exe high CPU usage. After this, disable the drivers installed by the suspected applications.<\/p><ul class=\"wp-block-list\">\n<li>Press <strong>WINDOWS + X<\/strong> and click on <strong>Device Manager<\/strong>.<\/li>\n\n\n\n<li>Locate the drivers that look suspicious.<\/li>\n\n\n\n<li><strong>Uninstall<\/strong> them.<\/li>\n<\/ul><p>Doing this should reduce the LSAISO.exe high CPU usage on your Windows PC or server.<\/p><h3 class=\"wp-block-heading\" id=\"h-method-2-check-for-queued-apcs\">Method 2: Check for Queued APCs<\/h3><p>APC or <a href=\"https:\/\/learn.microsoft.com\/en-us\/windows\/win32\/sync\/asynchronous-procedure-calls\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Asynchronous Procedure Call<\/a> is a procedure call in the form of a function pointer scheduled to be executed on a specific thread. You can determine if a problematic driver that has queued an APC to the LSAISO.exe process using WinDbg or any other free debugging tool. Carefully follow the steps mentioned here &ndash;<\/p><ul class=\"wp-block-list\">\n<li>Generate a kernel memory dump using NotMyFault.exe. Download it from <a href=\"https:\/\/learn.microsoft.com\/en-us\/sysinternals\/downloads\/notmyfault\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">here<\/a>. Use it to spike CPU usage on purpose.<ul><li>Open the <strong>Control Panel<\/strong> and click on <strong>System<\/strong>.<\/li><\/ul>\n<ul class=\"wp-block-list\">\n<li>In the <strong>System Properties<\/strong> window, click on the <strong>Advanced<\/strong> tab.<\/li>\n\n\n\n<li>Navigate to the <strong>Startup and Recovery<\/strong> and click on <strong>Settings<\/strong>.<\/li>\n\n\n\n<li>In the <strong>Startup and Recovery<\/strong> box, locate the <strong>Write debugging information<\/strong> section and use the pull-down menu to select <strong>Kernel memory dump<\/strong>.<\/li>\n\n\n\n<li>Note down the URL.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Install <strong>WinDbg<\/strong> and Launch It.<\/li>\n\n\n\n<li>Click on <strong>File<\/strong>.<\/li>\n\n\n\n<li>Click on <strong>Symbol File Path<\/strong> to open <strong>Crash Dump<\/strong>.<\/li>\n\n\n\n<li>Use the address that you have noted down.<\/li>\n\n\n\n<li>Click <strong>Open<\/strong>.<\/li>\n\n\n\n<li>In the command window, type <strong>!apc<\/strong> and press <strong>Enter<\/strong>.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"601\" height=\"98\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2024\/03\/mark-apc.jpg\" alt=\"run the command in WinDbg tool\" class=\"wp-image-164797 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2024\/03\/mark-apc.jpg 601w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2024\/03\/mark-apc-300x49.jpg 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2024\/03\/mark-apc-150x24.jpg 150w\" sizes=\"auto, (max-width: 601px) 100vw, 601px\" \/><\/figure>\n<\/div><ul class=\"wp-block-list\">\n<li>The output will look something like this &ndash;<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"590\" height=\"201\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2024\/03\/output.jpg\" alt=\"output file of windbg\" class=\"wp-image-164798 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2024\/03\/output.jpg 590w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2024\/03\/output-300x102.jpg 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2024\/03\/output-150x51.jpg 150w\" sizes=\"auto, (max-width: 590px) 100vw, 590px\" \/><\/figure>\n<\/div><ul class=\"wp-block-list\">\n<li>Search for LSAISO.exe. If you cannot find any drivers listed under LSAISO.exe, this means the process has no queued APCs. However, if you find any driver named <strong>&lt;ProblemDriver&gt;.sys<\/strong>, contact the vendor for more details.<\/li>\n<\/ul><h2 class=\"wp-block-heading\" id=\"expert-data-recovery-solution\">Expert Data Recovery Solution<\/h2><p>From unstable applications to <strong>unexpected system crashes<\/strong>, many problems can arise due to LSAISO.exe high CPU usage. A high CPU usage can also cause a computer to <strong>overheat<\/strong>, which could result in system crashes.<\/p><p>Such issues can prevent you from taking complete data backups to safeguard files from unforeseen data loss. In such a situation, you can use a powerful <a href=\"https:\/\/www.stellarinfo.com\/windows-data-recovery.php\" target=\"_blank\" rel=\"noreferrer noopener\">Windows data recovery software<\/a> like <strong>Stellar Data Recovery<\/strong>. The software helps you recover data from an unstable or frequently crashing PC without putting unwanted strain on the native drive.<\/p><p>Once you have safely retrieved your data onto an external storage drive, try <a href=\"https:\/\/support.microsoft.com\/en-us\/windows\/use-system-restore-a5ae3ed9-07c4-fd56-45ee-096777ecd14e#:~:text=Select%20the%20Start%20button%2C%20then,%3E%20Open%20System%20Restore%20%3E%20Next.\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">performing a system restore<\/a>. This will help your PC revert to a previous error-free state. If this doesn&rsquo;t work, perform a clean installation of <a href=\"https:\/\/answers.microsoft.com\/en-us\/insider\/forum\/all\/how-to-perform-a-clean-install-or-reinstall-of\/aef0ae63-2117-41ee-a8ea-4a3181625b08\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Windows 10<\/a> or <a href=\"https:\/\/www.microsoft.com\/en-us\/windowsinsider\/cleaninstall\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Windows 11<\/a>.<\/p><h2 class=\"wp-block-heading\" id=\"conclusion\">Conclusion<\/h2><p>The LSAISO.exe high CPU usage is an issue that mainly occurs on Windows servers. However, it can also occur on Windows PCs running on Windows 10 and above.<\/p><p>We hope the abovementioned methods helped you fix the LSAISO.exe high CPU usage issue. You can also try running a system-wide malware scan to remove any virus that might have spiked the CPU usage. Also, keep the Windows OS and the device drivers updated, as running outdated OS and drivers can cause similar problems.<\/p><h2 class=\"wp-block-heading\" id=\"related-reads\">Related Reads<\/h2><p><a href=\"https:\/\/www.stellarinfo.com\/blog\/lsass-exe-unable-to-locate-component-error-message\/\" target=\"_blank\" rel=\"noreferrer noopener\">Methods to Fix Windows Error &ndash; Lsass.exe Unable to Locate Component<\/a><\/p><p><a href=\"https:\/\/www.stellarinfo.com\/article\/why-does-my-computer-crash-randomly.php\" target=\"_blank\" rel=\"noreferrer noopener\">Methods to Fix Unexpectedly Crashing Windows Computers<\/a><\/p><p><a href=\"https:\/\/www.stellarinfo.com\/blog\/fix-gaming-laptop-overheating\/\" target=\"_blank\" rel=\"noreferrer noopener\">Methods to Fix Laptop Overheating While Gaming<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Windows has added numerous security and cryptographic processes that run in the&hellip; <a class=\"more-link\" href=\"https:\/\/www.stellarinfo.com\/blog\/fix-lsaiso-exe-high-cpu-usage-windows\/\">Continue reading <span class=\"screen-reader-text\">How to Fix LSAISO.exe High CPU Usage?<\/span><\/a><\/p>\n","protected":false},"author":83,"featured_media":164823,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[692],"tags":[5087],"class_list":["post-164794","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-windows-data-recovery-standard","tag-windows-errors","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - 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