If Windows Defender real-time protection won’t turn on Windows 10, then you should check its settings. Sometimes, the date and time settings are the reason why Windows Defender won’t turn on. Using dedicated software solves the failure of the Windows Defender antivirus to turn on in Windows 10.
How do I fix Windows Defender in Windows 10?
How to fix the Windows 10 antivirus bug
- Click on the Start Menu and type ‘Windows Security’
- Open the app and click ‘Virus and security protection’
- Check for updates and install the latest version.
- Restart Windows Defender and it should be working properly again.
Why is my Windows 10 defender not working?
Method 1: Disabling or removing your third-party anti-virus programs. … So, the first solution you can try is disabling your other security programs. If that does not work, it would be best to completely remove them. Restart your PC and try launching Windows Defender again to see if the issue has been resolved.
How do I fix Windows Defender not working?
When you encounter these problems, here are some things you can try:
- Restart your PC. …
- Remove existing antivirus and antispyware software. …
- Scan your PC for malwares. …
- SFC scan. …
- Clean Boot. …
- Restart Security Center Service. …
- Delete conflicting Registry Entry. …
- Enabling Windows Defender from Group Policy.
Why can’t Windows Defender open?
Launch Control Panel from the Start Menu. Choose the Action Center under System and Security option. Locate the notification which says that Windows defender is turned off below the Security label. Hit the Turn on now tab to active the Windows Defender again.
How do I force turn on Windows Defender?
Turn on real-time and cloud-delivered protection
- Select the Start menu.
- In the search bar, type Windows Security. …
- Select Virus & threat protection.
- Under Virus & threat protection settings, select Manage settings.
- Flip each switch under Real-time protection and Cloud-delivered protection to turn them on.
How do I restore Windows Defender antivirus?
How to Reset Windows Defender Firewall
- Navigate to the Start menu and open the Control Panel.
- Click on the Windows Defender tab and choose the Restore defaults option from the left side panel.
- Click on the Restore defaults button and confirm your action by clicking Yes in the confirmation window.
Why is my Windows Defender antivirus turned off?
If Windows Defender is turned off, this may be because you have another antivirus app installed on your machine (check Control Panel, System and Security, Security and Maintenance to make sure). You should turn off and uninstall this app before running Windows Defender to avoid any software clashes.
How can I tell if Windows Defender is on?
Open Task Manager and click on Details tab. Scroll down and look for MsMpEng.exe and the Status column will show if it’s running. Defender won’t be running if you have another anti-virus installed. Also, you can open Settings [edit: >Update & security] and choose Windows Defender in the left panel.