{"id":23775,"date":"2024-08-09T17:00:08","date_gmt":"2024-08-09T11:30:08","guid":{"rendered":"https:\/\/www.systweak.com\/blogs\/?p=23775"},"modified":"2024-08-09T10:52:23","modified_gmt":"2024-08-09T05:22:23","slug":"antimalware-service-executable-high-cpu-usage","status":"publish","type":"post","link":"https:\/\/www.systweak.com\/blogs\/antimalware-service-executable-high-cpu-usage\/","title":{"rendered":"[Fixed] Antimalware Service Executable High CPU Usage Issue"},"content":{"rendered":"<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Antimalware service executable is a Windows Security process that runs in the background. However, things get complicated when it negatively impacts computer performance and CPU usage goes up to 99%. Suppose you are also concerned about this process, which is part of Windows Security (formerly Windows Defender) and is responsible for real-time protection against malware. In that case, this post will help you understand the causes and explain ways to manage and decrease the impact on your computer\u2019s efficiency.<\/span><\/p>\n<h3 style=\"text-align: justify;\"><strong>What is Antimalware Service Executable, And What Is The High CPU Usage Issue?<\/strong><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">If you <a href=\"https:\/\/www.systweak.com\/blogs\/how-to-fix-high-cpu-usage-in-windows\/\">encounter high CPU usage<\/a> related to the Antimalware Service Executable on Windows 10, it\u2019s due to the process named msmpeng.exe. This process is visible in Task Manager and can cause CPU spikes, but it is not a virus or malicious software. Instead, msmpeng.exe is an essential component of Windows Security&#8217;s suite of protection services, collectively known as Antimalware Service Executable.<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-23788\" src=\"https:\/\/cdn.systweak.com\/content\/wp\/bg_systweak_com\/uploads\/2024\/08\/Windows-Task-Manager.webp\" alt=\"Windows Task Manager\" width=\"602\" height=\"218\" sizes=\"(max-width: 602px) 100vw, 602px\" \/><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Since the Antimalware Service Executable is a legitimate Windows service, you cannot fix this issue using Windows Troubleshooter or third-party tools. Some Experts have identified a file named <\/span><b>mpenginedb.db <\/b><span style=\"font-weight: 400;\">as the main culprit. However, this file is not a virus or malware but a system file used by Windows Defender that contains a database of identifiers, causing Windows Defender to enter a continuous scanning loop. Persistent scanning unnecessarily consumes system resources, leading to high CPU usage.\u00a0<\/span><\/p>\n<h3 style=\"text-align: justify;\">Why Is the Antimalware Service Executable (MsMpEng.exe) Using So Much Disk Space?<\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">The MsMpEng.exe process, part of Windows Defender, can be quite resource-intensive. Normally, it should operate without significantly affecting disk usage. However, if you see a warning about high disk usage, it indicates a problem. This issue often results in increased CPU usage and overall strain on your computer&#8217;s resources, leading to decreased performance.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Several factors might contribute to this problem on Windows 10 PCs, including:<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">&#8211; Corruption in Windows Defender files<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">&#8211; High frequency of MsMpEng.exe tasks<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">&#8211; Conflicts with another antivirus program<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">&#8211; Malware infections<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">&#8211; Problematic Windows update<\/span><\/p>\n<h2 style=\"text-align: justify;\">How To Fix Antimalware Service Executable High CPU Usage Issue?<\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">PC experts have suggested that the only effective solution for resolving the issue is to delete the <\/span><b>Mpengine.db<\/b><span style=\"font-weight: 400;\"> file. However, since this system file is integral to Windows 10, it cannot be removed normally. To remove this file, follow these steps:<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Step 1: Press Win + S to open the Windows Search box. Type Windows Security. Click on the relevant result under best match.<\/span><b><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-23224\" src=\"https:\/\/cdn.systweak.com\/content\/wp\/bg_systweak_com\/uploads\/2024\/07\/windows-security.webp\" alt=\"Windows Security - Virus and threat protection\" width=\"1279\" height=\"478\" sizes=\"(max-width: 1279px) 100vw, 1279px\" \/><\/b><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Step 2: Click on <b>Virus and Threat Protection <\/b>and then click on<b> Manage Settings.<\/b><\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-23789\" src=\"https:\/\/cdn.systweak.com\/content\/wp\/bg_systweak_com\/uploads\/2024\/08\/virus-and-threat-protection.webp\" alt=\"virus and threat protection\" width=\"1190\" height=\"932\" sizes=\"(max-width: 1190px) 100vw, 1190px\" \/><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\"><br \/>\nStep 3: Turn off the toggle button under each heading to disable all the Windows Security options.<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-23778\" src=\"https:\/\/cdn.systweak.com\/content\/wp\/bg_systweak_com\/uploads\/2024\/08\/Various-Windows-Security-options.webp\" alt=\"Various Windows Security options\" width=\"534\" height=\"883\" sizes=\"(max-width: 534px) 100vw, 534px\" \/><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Step 4: Close all the windows and press Win + L to lock your Windows PC.<br \/>\n<\/span><span style=\"font-weight: 400;\">Step 5: Press and hold the Shift button on your keyboard, then click the Power button in the bottom right corner to choose Restart.<br \/>\n<\/span><span style=\"font-weight: 400;\">Step 6: Windows will restart and boot in WinRE mode. Select Troubleshoot, followed by Advanced Options, and then choose Startup Settings, followed by Restart. Press and hold the \u201c4\u201d key on your keyboard to restart the PC in safe mode.<br \/>\n<\/span><span style=\"font-weight: 400;\">Step 7: Once the Windows boots in the safe mode, press Win + S to open Windows Search and type Registry.<br \/>\n<\/span><span style=\"font-weight: 400;\">Step 8: Click the \u201cRun As Administrator\u201d option, and the Windows Registry Editor will open.<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-23779\" src=\"https:\/\/cdn.systweak.com\/content\/wp\/bg_systweak_com\/uploads\/2024\/08\/Registry-typed-in-Windows-Search-Box.webp\" alt=\"Registry typed in Windows Search Box\" width=\"722\" height=\"368\" sizes=\"(max-width: 722px) 100vw, 722px\" \/><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Step 9: Copy and paste the following path in the address bar of the Windows Registry.<\/span><\/p>\n<p style=\"text-align: justify;\"><b>HKEY_LOCAL_MACHINE\\SOFTWARE\\Policies\\Microsoft\\Windows Defender<\/b><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Step 10: Right-click on Windows Defender in the left panel and choose New&gt;DWORD (32-bit) value. A new key will be created. Rename it \u201cDisableAntiSpyware.\u201d Click on the OK button.<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-23780\" src=\"https:\/\/cdn.systweak.com\/content\/wp\/bg_systweak_com\/uploads\/2024\/08\/Registry-Editor.webp\" alt=\"Windows Defender in Registry Editor\" width=\"671\" height=\"656\" sizes=\"(max-width: 671px) 100vw, 671px\" \/><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Step 11: Double-click on the key created and change the Value from 0 to 1.<br \/>\n<\/span><span style=\"font-weight: 400;\">Step 12: Exit the Registry and reboot the PC.<br \/>\n<\/span><span style=\"font-weight: 400;\">Step 13: After the PC restarts, Press Win + X to open the Power menu and choose Terminal (admin). The Windows PowerShell will open in administrator mode.<br \/>\n<\/span><span style=\"font-weight: 400;\">Step 14: Copy and paste the following command with the Enter key.<\/span><\/p>\n<p style=\"text-align: justify;\"><b>Remove-Item \u2018C:\\ProgramData\\Microsoft\\Windows Defender\\Scans\\mpenginedb.db\u2019<\/b><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Once the <\/span><b>Mpengine.db<\/b><span style=\"font-weight: 400;\"> file has been removed from your PC, the Issue will be fixed. Follow steps 1 &#8211; 3 to enable all the toggle buttons in Windows Security.<\/span><\/p>\n<h2 style=\"text-align: justify;\"><em>Other Methods&#8230;&#8230;.<\/em><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Some experts recommend a few other methods to help resolve the Antimalware Service Executable High CPU Usage Issue. However, it is recommended that you try the above methods first and follow these steps only if the first method does not fix your issue.<\/span><\/p>\n<h3 style=\"text-align: justify;\">Method 1: Disable Real-Time Protection<\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">You can disable real-time protection from Windows Security and check if the issue is fixed. Here are the steps:<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Step 1: Press Windows + S and type \u201cWindows Security.\u201d Click on the relevant result.<br \/>\n<\/span><span style=\"font-weight: 400;\">Step 2: Click on the <\/span><b>Virus &amp; Threat Protection<\/b><span style=\"font-weight: 400;\"> button and then click on Manage Settings.<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-23789\" src=\"https:\/\/cdn.systweak.com\/content\/wp\/bg_systweak_com\/uploads\/2024\/08\/virus-and-threat-protection.webp\" alt=\"virus and threat protection\" width=\"1190\" height=\"932\" sizes=\"(max-width: 1190px) 100vw, 1190px\" \/><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Step 3: Slide the toggle button under <\/span><b>Real-time protection<\/b><span style=\"font-weight: 400;\"> towards the left to turn it off. <img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-23778\" src=\"https:\/\/cdn.systweak.com\/content\/wp\/bg_systweak_com\/uploads\/2024\/08\/Various-Windows-Security-options.webp\" alt=\"Various Windows Security options\" width=\"534\" height=\"883\" sizes=\"(max-width: 534px) 100vw, 534px\" \/><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Now you can check if the Antimalware Service Executable High CPU usage issue persists.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">If it does, move to Method 3; if it doesn\u2019t, follow the steps under Method 2. In any case, enable the toggle button under <\/span><b>Real-time protection.<\/b><\/p>\n<p style=\"text-align: justify;\">Read Also: <a href=\"https:\/\/www.systweak.com\/blogs\/pc-doctor-module-high-cpu-usage\/\">4 Ways to Lower PC Doctor Module High CPU Usage<\/a><\/p>\n<h3 style=\"text-align: justify;\">Method 2: Add The Antimalware Service Executable Folder to the Exclusion List<\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Step 1: Press Win + I to open the Windows Settings and click on the \u201cPrivacy &amp; Security\u201d tab in the left panel.<br \/>\n<\/span><span style=\"font-weight: 400;\">Step 2: Click on the Windows Security option in the right section.<br \/>\n<\/span><span style=\"font-weight: 400;\">Step 3: Next, click on the <\/span><b>Virus &amp; Threat Protection<\/b><span style=\"font-weight: 400;\"> option.<br \/>\n<\/span><span style=\"font-weight: 400;\">Step 4: Click on the <\/span><b>Manage Settings<\/b><span style=\"font-weight: 400;\"> link.<br \/>\n<\/span><span style=\"font-weight: 400;\">Step 5: Scroll down until you locate the <\/span><b>Add or Remove Exclusions<\/b><span style=\"font-weight: 400;\"> link and click on it.<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-23781\" src=\"https:\/\/cdn.systweak.com\/content\/wp\/bg_systweak_com\/uploads\/2024\/08\/Add-or-Remove-Exclusions-link.webp\" alt=\"Add or Remove Exclusions link\" width=\"1280\" height=\"711\" sizes=\"(max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Step 6: Click the <\/span><b>Add an Exclusion<\/b><span style=\"font-weight: 400;\"> button and choose Folder to open a File Explorer window.<br \/>\n<\/span><span style=\"font-weight: 400;\">Step 7: Navigate to <\/span><b>C:\\Program Files\\Windows Defender<\/b><span style=\"font-weight: 400;\"> in the File Explorer.<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-23782\" src=\"https:\/\/cdn.systweak.com\/content\/wp\/bg_systweak_com\/uploads\/2024\/08\/C-Program-Files-Windows-Defender-in-File-Explorer.webp\" alt=\"C Program Files Windows Defender in File Explorer.\" width=\"625\" height=\"464\" sizes=\"(max-width: 625px) 100vw, 625px\" \/><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Step 8: Click the Ok button to add this folder to the Exclusion list.<\/span><\/p>\n<h3 style=\"text-align: justify;\">Method 3: Alter The Windows Security Schedule<\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Step 1: Press Win + R to open the Run box and type \u201ctaskschd.msc\u201d followed by the Enter key.<br \/>\n<\/span><span style=\"font-weight: 400;\">Step 2: A new window will open. In the left panel, click on <\/span><b>Task Scheduler Library,<\/b><span style=\"font-weight: 400;\"> followed by <\/span><b>Microsoft &gt;<\/b> <b>Windows<\/b><span style=\"font-weight: 400;\">.<br \/>\n<\/span><span style=\"font-weight: 400;\">Step 3: Next, scroll down the options under Windows and click on Windows Defender.<br \/>\n<\/span><span style=\"font-weight: 400;\">Step 4: On the right side, double-click on \u201c<\/span><b>Windows Defender Scheduled Scan<\/b><span style=\"font-weight: 400;\">.\u201d<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-23784\" src=\"https:\/\/cdn.systweak.com\/content\/wp\/bg_systweak_com\/uploads\/2024\/08\/Task-Scheduler.webp\" alt=\"Task Scheduler\" width=\"700\" height=\"441\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Step 5: A new box will open here; uncheck the box next to &#8220;Run with highest privileges.&#8221;<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-23785\" src=\"https:\/\/cdn.systweak.com\/content\/wp\/bg_systweak_com\/uploads\/2024\/08\/Windows-Defender-Scheduled-Scan-Properties.webp\" alt=\"Windows Defender Scheduled Scan Properties - General Tab\" width=\"629\" height=\"477\" sizes=\"(max-width: 629px) 100vw, 629px\" \/><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Step 6: Click on the Conditions tab, uncheck all the checkboxes, and click OK button.<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-23786\" src=\"https:\/\/cdn.systweak.com\/content\/wp\/bg_systweak_com\/uploads\/2024\/08\/Windows-Defender-Scheduled-Scan-Properties-Conditions-tab.webp\" alt=\"Windows Defender Scheduled Scan Properties -Conditions tab\" width=\"626\" height=\"475\" sizes=\"(max-width: 626px) 100vw, 626px\" \/><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Step 7: Click on the Triggers tab and click on the New button.<br \/>\n<\/span><span style=\"font-weight: 400;\">Step 8: Select the frequency, scan time, and date of the Windows Security scan and click OK.<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-23787\" src=\"https:\/\/cdn.systweak.com\/content\/wp\/bg_systweak_com\/uploads\/2024\/08\/Edit-Trigger.webp\" alt=\"Edit Trigger - Task Scheduler\" width=\"800\" height=\"578\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Step 9: Restart your PC.<\/span><\/p>\n<h3 style=\"text-align: justify;\">Bonus Tip: Use T9 Antivirus<\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">If the Windows Security App continues to cause more issues, then we recommend you disable it as explained above and use a third-party antivirus known as T9 Antivirus. This real-time antivirus is one of the <a href=\"https:\/\/www.systweak.com\/blogs\/t9-antivirus-review\/\">best antivirus\/antimalware apps<\/a> available in the software market that provides additional features as well like:<\/span><\/p>\n<p style=\"text-align: justify;\"><b>Ad Blocker<\/b><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">The T9 antivirus includes an ad blocker module that allows users to install an extension to prevent ads while browsing the internet.<\/span><\/p>\n<p style=\"text-align: justify;\"><b>PC Optimizer and Shredder<\/b><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">PC Optimizer tool helps eliminate junk and temporary files from your computer. In contrast, Shredder will help to permanently erase personal files and data, ensuring they are unrecoverable even by file recovery software.<\/span><\/p>\n<p style=\"text-align: justify;\"><b>Startup Manager<\/b><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">This module enhances your PC&#8217;s boot speed by removing unnecessary programs that start automatically when your computer powers on.<\/span><\/p>\n<p style=\"text-align: justify;\"><b>Web Protection<\/b><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">T9 antivirus establishes a secure channel to safeguard incoming and outgoing traffic from your PC.<\/span><\/p>\n<p style=\"text-align: justify;\"><b>Firewall Protection<\/b><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">T9 antivirus provides additional security for your PC through its firewall protection feature.<\/span><\/p>\n<div class=\"download_buttons_section\"><p style=\"text-align: justify;display:none;\" class=\"downloadnow-btn-show os-windows\" data-eventsource=\"DownloadNow_post_button\"><a data-param=\"systweakblog,wp_json\/wp\/v2\/posts\/23775,pos-1,\" data-operation=\"iframe\" class=\"ds-download-link \" rel=\"nofollow\" href=\"https:\/\/www.systweak.com\/blogs\/download-product\/t9\/w\/23775\/1\" onclick=\"gtag('event', 'ProductDownloadSysBlog', { 'event_label' :'antimalware-service-executable-high-cpu-usage', 'event_category':'windows-1' });\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full\" src=\"https:\/\/bg.systweak.com\/blogs\/wp-content\/plugins\/download-button-shortcode-new\/images\/window_btn.png\" alt=\"download\" width=\"250\" height=\"65\"><\/a><\/p><\/div>\n<h3 style=\"text-align: justify;\">Have You Fixed the Issue?<\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">These steps address this error and the associated msmpeng high CPU usage issue in Windows 10. While resolving the Antimalware Service Executable issue might seem lengthy and complex, you can complete it by carefully reading the instructions and following each step without skipping any. If you continue to experience difficulties and cannot resolve the issue, please comment below, and we will provide the best possible solution.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Antimalware service executable is a Windows Security process that runs in the background. However, things get complicated when it negatively impacts computer performance and CPU usage goes up to 99%. Suppose you are also concerned about this process, which is part of Windows Security (formerly Windows Defender) and is responsible for real-time protection against malware.&hellip; <a class=\"more-link\" href=\"https:\/\/www.systweak.com\/blogs\/antimalware-service-executable-high-cpu-usage\/\">Continue reading <span class=\"screen-reader-text\">[Fixed] Antimalware Service Executable High CPU Usage Issue<\/span><\/a><\/p>\n","protected":false},"author":12,"featured_media":23811,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7],"tags":[],"class_list":["post-23775","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-windows-security","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3-RC2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>[Fixed] Antimalware Service Executable High CPU Usage Issue<\/title>\n<meta name=\"description\" content=\"Are you experiencing high CPU usage from the Antimalware Service Executable on Windows 10? 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