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Welcome to Microsoft Community. I'm sorry that Windows Defender has been causing you trouble. If you want to disable Windows Defender, you can try the following methods: Method 1: Registry Editor (Applies to all versions of Windows 10) Press Win + R to open the "Run" dialog, type regedit, and press Enter. In the Registry Editor window, navigate ...
On the command prompt screen, Right click the blinking cursor. The command will populate. If it doesn't start on its own, hit <enter>. It runs in only a few seconds. Type Exit and <enter> to leave the screen. Restart your PC, and test Defender again. Good luck, Glen.
Good to see you in Microsoft Community. You can repair/reset Windows Security app by the following steps: Clear the Microsoft Store cache. "Win" logo key + "R" to open "Run", type "wsreset.exe", and press Enter (this will open a blank " Command Prompt" window, which will close and automatically open the Microsoft Store after about 10 seconds).
To Enable periodic scanning for threats, open Windows Security > Virus & threat protection > Under Windows Defender Antivirus options > change the toggle to On. Kind regards. Report abuse
If not, follow the next steps to enable it yourself manually. Click Start. Click Settings or press Windows key + i. Click Click Update & Security. Click Windows Defender. Make sure Real-time protection is enabled. Windows Defender should automatically turn on and prompt you update.
Fix: 1. press Windows Key + R. 2. type regedit. 3. locate the following path HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS DEFENDER\. 4. Right Click this file and select permissions. 5. press Advanced. 6. where it says owner press change. 7. change the owner to your username.
For me, the solution was: - Run Registry Editor as Administrator. - Go to Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Policy Manager. - Set value of AllowUserUIAccess to 1. It took me a whole week to find out the User Interface was disabled. But I hope this solution helps you. Andrew.
To Run a Microsoft Defender Offline Scan from Command Prompt. For more usage options for the Start-MpWDOScan command, see: Start-MpWDOScan. 1 Open an elevated command prompt. 2 Copy and paste the PowerShell Start-MpWDOScan command into the elevated command prompt, and press Enter. 3 Go to step 6 in OPTION THREE below.
Once you enter that command restart your computer and check the Windows Defender. If issue persists, check for updates and install any updates available. -Press Windows key + X -Go to Settings -Click Update and Security -Check for Updates and install all updates available. Restart once done and check the Windows Security.
4 In the right pane of Windows Defender Antivirus or Microsoft Defender Antivirus in Local Group Policy Editor, double click/tap on the Turn off Windows Defender Antivirus or Turn off Microsoft Defender Antivirus policy to edit it. (see screenshot above) 5 Do step 5 (on) or step 6 (off) below for what you would like to do.