{"id":1437,"date":"2016-01-17T11:25:04","date_gmt":"2016-01-17T05:55:04","guid":{"rendered":"http:\/\/198.58.113.91\/blog\/?p=1437"},"modified":"2024-04-11T10:36:24","modified_gmt":"2024-04-11T05:06:24","slug":"mpcmdrun-signature-update-and-quickscan-one-go","status":"publish","type":"post","link":"https:\/\/www.winhelponline.com\/blog\/mpcmdrun-signature-update-and-quickscan-one-go\/","title":{"rendered":"How to Update Microsoft Defender and Run a Quick Scan in One Go"},"content":{"rendered":"<p>The Microsoft Defender command-line utility <code>MpCmdRun.exe<\/code> is mostly used to <a href=\"https:\/\/www.winhelponline.com\/blog\/schedule-windows-defender-scan-windows-10\/\">schedule<\/a> scans and update the definitions. The MpCmdRun.exe command usage info can be obtained by running MpCmdRun.exe with &#8220;<code>\/?<\/code>&#8221; or without any parameter.<\/p>\n<p>However, it doesn&#8217;t mention a useful switch that updates Defender signatures and runs a Quick Scan at once.<!--more--><\/p>\n<h2>MpCmdRun.exe &#8212; Signature Update &amp; Quick Scan<\/h2>\n<p>To update the definitions and run a Quick Scan in one go, use the switch <b>SignatureUpdateAndQuickScan<\/b><\/p>\n<pre>\"C:\\Program Files\\Windows Defender\\MpCmdRun.exe\" \/SignatureUpdateAndQuickScan<\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-24193\" src=\"https:\/\/www.winhelponline.com\/blog\/wp-content\/uploads\/2016\/01\/mpcmdrun-update-and-scan.png\" alt=\"windows defender command-line switches\" width=\"704\" height=\"141\" \/><\/p>\n<p>&#8230; and the event (1001) is written to <code>Microsoft-Windows-Windows Defender\/Operational<\/code> event log.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-24194\" src=\"https:\/\/www.winhelponline.com\/blog\/wp-content\/uploads\/2016\/01\/defender-scan-event-log.png\" alt=\"windows defender scan event log\" width=\"530\" height=\"390\" \/><\/p>\n<hr \/>\n<h3>Other\u00a0MpCmdRun.exe\u00a0command-line switches<\/h3>\n<p>Here are the other commonly used MpCmdRun.exe command-line switches:<\/p>\n<h4>Run a Quick Scan<\/h4>\n<pre>\"C:\\Program Files\\Windows Defender\\MpCmdRun.exe\" -Scan -ScanType 1<\/pre>\n<h4>Run a Full Scan<\/h4>\n<pre>\"C:\\Program Files\\Windows Defender\\MpCmdRun.exe\" -Scan -ScanType 2<\/pre>\n<h4>Update the Definitions<\/h4>\n<pre>\"C:\\Program Files\\Windows Defender\\MpCmdRun.exe\" -SignatureUpdate<\/pre>\n<p>To see the complete list of arguments, open a Command Prompt window and type:<\/p>\n<pre>\"C:\\Program Files\\Windows Defender\\MpCmdRun.exe\"<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>The Microsoft Defender command-line utility MpCmdRun.exe is mostly used to schedule scans and update the definitions. The MpCmdRun.exe command usage info can be obtained by running MpCmdRun.exe with &#8220;\/?&#8221; or without any parameter. However, it doesn&#8217;t mention a useful switch that updates Defender signatures and runs a Quick Scan at once.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[8,869,10],"tags":[661],"class_list":["post-1437","post","type-post","status-publish","format-standard","hentry","category-windows-10","category-windows-11","category-windows-8","tag-windows-defender"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":1569,"url":"https:\/\/www.winhelponline.com\/blog\/schedule-windows-defender-scan-windows-10\/","url_meta":{"origin":1437,"position":0},"title":"How to Schedule Microsoft Defender Scan in Windows 10\/11","author":"Ramesh","date":"February 4, 2016","format":false,"excerpt":"Microsoft Defender's command-line utility MpCmdrun.exe is used for scheduling scans or updating the signatures using the command-line. This post tells you how to set up\u00a0Microsoft Defender to scan the computer daily at a specified time using Task Scheduler and in Windows 10 or 11. Note: Windows already includes the Automatic\u2026","rel":"","context":"In &quot;Windows 10&quot;","block_context":{"text":"Windows 10","link":"https:\/\/www.winhelponline.com\/blog\/category\/microsoft\/windows\/windows-10\/"},"img":{"alt_text":"windows defender scan schedule","src":"https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/w10\/w10-dfnder-sch-10.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/w10\/w10-dfnder-sch-10.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/w10\/w10-dfnder-sch-10.png?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":3862,"url":"https:\/\/www.winhelponline.com\/blog\/windows-defender-scan-cascading-menu-desktop\/","url_meta":{"origin":1437,"position":1},"title":"Add Microsoft Defender Options as Cascading Right-Click Menu in Desktop","author":"Ramesh","date":"August 19, 2016","format":false,"excerpt":"Here is a registry tweak that adds some Windows Defender options to the Desktop Context menu as a cascading menu so you can quickly run a scan, update, or open Microsoft Defender. Download defender_menu.zip, unzip it and run the enclosed REG file. When you right-click on the desktop, you'll see\u2026","rel":"","context":"In &quot;Windows&quot;","block_context":{"text":"Windows","link":"https:\/\/www.winhelponline.com\/blog\/category\/microsoft\/windows\/"},"img":{"alt_text":"defender scan options as cascading menu","src":"https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2016\/08\/defender-cascade-options.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":44868,"url":"https:\/\/www.winhelponline.com\/blog\/cancel-ongoing-defender-scan-start-mpscan\/","url_meta":{"origin":1437,"position":2},"title":"How to Cancel an Ongoing Defender Scan started with Start-MpScan","author":"Ramesh","date":"May 10, 2023","format":false,"excerpt":"The PowerShell cmdlet Start-MpScan starts a Microsoft Defender antivirus scan, but PowerShell offers no option to stop an ongoing scan. You may wonder how to cancel an ongoing quick\/full scan started with Start-MpScan. Unfortunately, when you start a scan using PowerShell, the Windows Security dashboard doesn't indicate whether a scan\u2026","rel":"","context":"In &quot;Windows 10&quot;","block_context":{"text":"Windows 10","link":"https:\/\/www.winhelponline.com\/blog\/category\/microsoft\/windows\/windows-10\/"},"img":{"alt_text":"start-mpscan","src":"https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2023\/05\/powershell-start-mpscan.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2023\/05\/powershell-start-mpscan.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2023\/05\/powershell-start-mpscan.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2023\/05\/powershell-start-mpscan.png?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":5962,"url":"https:\/\/www.winhelponline.com\/blog\/windows-defender-update-error-0x80070643-definition-update-via-wu\/","url_meta":{"origin":1437,"position":3},"title":"Windows Defender Error 0x80070643 Updating Definitions","author":"Ramesh","date":"November 22, 2017","format":false,"excerpt":"When you attempt to update Windows Defender via Windows Update, error 0x80070643 may appear, and the definition updates fail to install. Here is the full error message: There were problems installing some updates, but we'll try again later. If you keep seeing this and want to search the web or\u2026","rel":"","context":"In &quot;Windows&quot;","block_context":{"text":"Windows","link":"https:\/\/www.winhelponline.com\/blog\/category\/microsoft\/windows\/"},"img":{"alt_text":"windows defender error 0x80070643","src":"https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2017\/11\/defender-error-0x80070643.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2017\/11\/defender-error-0x80070643.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2017\/11\/defender-error-0x80070643.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2017\/11\/defender-error-0x80070643.png?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":75146,"url":"https:\/\/www.winhelponline.com\/blog\/defender-definitions-update-frequency\/","url_meta":{"origin":1437,"position":4},"title":"How to Change Microsoft Defender Definitions Update Frequency","author":"Ramesh","date":"May 12, 2024","format":false,"excerpt":"Microsoft Malware Protection Center releases security intelligence updates (a.k.a, definition updates) every 3-4 hours to update the virus definitions. However, your system may not automatically install every security intelligence update. Windows Update automatically installs the Defender security intelligence update once per day. It lets you manually check for updates and\u2026","rel":"","context":"In &quot;Windows 10&quot;","block_context":{"text":"Windows 10","link":"https:\/\/www.winhelponline.com\/blog\/category\/microsoft\/windows\/windows-10\/"},"img":{"alt_text":"defender updates - windows update","src":"https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2024\/05\/wu-defender-update.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2024\/05\/wu-defender-update.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2024\/05\/wu-defender-update.png?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":1848,"url":"https:\/\/www.winhelponline.com\/blog\/restore-defender-mpidletask-task-scheduler-deleted\/","url_meta":{"origin":1437,"position":5},"title":"Restore Windows Defender Scheduled Scan Task After Deleting it Accidentally","author":"Ramesh","date":"March 5, 2016","format":false,"excerpt":"Windows Defender's built-in scheduled task named \"Windows Defender Scheduled Scan\" is run by Automatic Maintenance when the system is idle. If you've deleted this task by mistake, this post tells you how to get it back in Windows 10. Use any one of the following methods. Restoring Windows Defender Scheduled\u2026","rel":"","context":"In &quot;Windows 10&quot;","block_context":{"text":"Windows 10","link":"https:\/\/www.winhelponline.com\/blog\/category\/microsoft\/windows\/windows-10\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/w10\/mpidletask-1.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.winhelponline.com\/blog\/wp-json\/wp\/v2\/posts\/1437","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.winhelponline.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.winhelponline.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.winhelponline.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.winhelponline.com\/blog\/wp-json\/wp\/v2\/comments?post=1437"}],"version-history":[{"count":0,"href":"https:\/\/www.winhelponline.com\/blog\/wp-json\/wp\/v2\/posts\/1437\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.winhelponline.com\/blog\/wp-json\/wp\/v2\/media?parent=1437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.winhelponline.com\/blog\/wp-json\/wp\/v2\/categories?post=1437"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.winhelponline.com\/blog\/wp-json\/wp\/v2\/tags?post=1437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}