How To Fix Windows Defender Not Opening
Users take reported the problem of Microsoft Defender not working or Not Turning ON. You should exist able to set this Windows Security problem using troubleshooting steps as provided beneath.
Microsoft Defender Non Turning ON
In general, the problem of Microsoft Defender Non Working or Not Turning ON is reported subsequently users have just bought a New calculator and besides when users are trying to switch from a Third-party Antivirus programme to Microsoft Defender.
In case of New Computers, the problem is usually due to McAfee Antivirus getting automatically installed on your device. This tin exist easily stock-still by uninstalling McAfee Antivirus programme from your computer.
If you Tin can't Plow ON Microsoft Defender, fifty-fifty after uninstalling McAfee, Norton or any other Antivirus program, the problem could be due to remnants or traces or previously installed Antivirus program withal remaining active on the computer.
In certain cases, the problem could also be due to Microsoft Defender beingness blocked or disabled by Malware/Viruses and other reasons.
Tip: In stubborn cases, the but way to gear up this problem is past using Reset This PC option (Come across Final Method below).
i. Remove Third-Party Antivirus Programs
By default, Microsoft Defender gets automatically disabled, when it detects the presence of a third-party Antivirus program beingness installed on the estimator.
Hence, the demand to remove all previously installed Antivirus programs from the computer. After which, you should be able to Enable Microsoft Defender protection.
Go to Settings > Apps > In the right-pane, select the Antivirus Programme that you lot want to remove and click on Uninstall.
Repeat the above steps to uninstall all versions & modules of Third-political party antivirus programs installed on your computer.
2. Manually Enable Microsoft Defender
After removing 3rd-part antivirus programs, you may have to manually enable Microsoft Defender Antivirus protection on your computer.
Go to Settings > Update & security > select Windows Security in the left-pane. In the right-pane, click on Virus & threat protection.
Scroll downwardly on the next screen and click on Manage Settings Link located nether "Virus & threat protection settings".
On the side by side screen, Switch ON Real-Fourth dimension Protection.
If want more protection, you can also Turn ON Cloud Delivered Protection as available on the same screen.
three. Use Antivirus Programme Clean Upwardly Tool
If you are unable to Enable Microsoft Defender, fifty-fifty after uninstalling third-political party antivirus plan, the problem could be due to traces of antivirus program nonetheless remaining on your computer.
To fix this, you can make utilise of Antivirus Software Removal Tools as available on Microsoft's back up page.
Download the Removal Tool as applicable for the antivirus program installed on your estimator > Right-click on the Downloaded File and click on Run as Administrator selection.
On the side by side screen, select Advanced selection > click on Remove Only and wait for the tool to remove all traces of antivirus program from your calculator.
four. Download Windows Security Troubleshooter
Go to Microsoft's Windows Security Back up page and click on Download to download Windows Security Troubleshooter on your computer.
Once the File is downloaded, open up the File and follow the instructions to Troubleshoot and gear up Windows Security issues on your computer.
Note: You lot tin too download the Troubleshooter to an External Storage Bulldoze and Run the Troubleshooter from USB Bulldoze to fix bug on your calculator.
5. Check Windows Defender Registry
It is possible that Microsoft Defender has been permanently disabled on your estimator by the third-party antivirus program that was previously installed on your computer.
Right-click on the Start button and click on the Run. In Run Control window, type Regedit and click on OK.
On Registry Editor Screen, navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender. In the right-pane, double-click on DisableAntiSpyware and change its Value Information from 1 to 0.
Note: 1 in Value data field Disables Windows Defender and 0 Enables Windows Defender.
After this, restart your calculator and see if yous can enable Microsoft Defender Real Time Protection on your figurer.
6. Scan PC Using Microsoft Safe Scanner
If you are still unable to Switch-ON Real-Time Protection by Microsoft Defender, it is good idea to check your estimator for Malware by using Microsoft Safe Scanner.
After the File is downloaded, open the File > select Blazon of Scan and click on the Scan button. In one case, the scan is completed, y'all will be able to run into the Scan results.
You can click on View Detailed Results option to see detailed browse results at %SYSTEMROOT%\debug\msert.log.
7. Run SFC Scan & DISM Tool
Run SFC Browse to rule out the possibility of System Files being damaged or corrupted on your reckoner.
Type Command Prompt in the Search bar > right-click on Command Prompt and select Run as Administrator option.
In the Command Prompt window, type sfc /scannow and press the Enter Primal.
Patiently wait for Windows to scan your computer for Organisation File Errors and fix them.
Afterwards the SFC Scan is completed, type DISM /Online /Cleanup-Image /RestoreHealth and printing the Enter Central.
Wait for the DISM tool to bank check your estimator for errors and fix them.
After the DISM command has finished running, restart your computer and encounter if you are now able to Enable Microsoft Defender Antivirus Protection on your estimator.
viii. Reset Computer
If above troubleshooting methods did not work, it is time to Reset your figurer. This was the simply method that worked in our case.
The congenital-in "Reset This PC tool" provides the option to Remove Everything from the reckoner and Reinstall Windows OS and likewise the option to go on All your personal files intact and Reinstall Windows Operating System.
Go to Settings > Update & security > Select Recovery the left pane. In the right-pane, click on Get Started selection located nether "Reset this PC" section.
On the side by side screen, select Continue My files choice and follow the onscreen instructions to Reset your computer.
One time the Reset process is completed, get to Settings > Update & security > select Windows Security in the left-pane. In the right-pane, click on Open Windows Security.
On the next screen, click on the Gear-shaped Settings Icon in left-pane. In the right-pane, click on Manage Providers link, located under "Security Providers".
On the side by side screen, y'all should find Microsoft Defender Antivirus Turned ON.
If you discover McAfee protecting your reckoner (instead of Microsoft Defender), you will have to Uninstall McAfee Antivirus program from your estimator, using steps equally provided in the first method (above).
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Source: https://www.techbout.com/microsoft-defender-not-working-69089/
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