Top 7 Solutions to Fix Windows Defender Does Not Start on Windows 10

Fix Windows Defender Does Not Start copy

Want to fix Windows Defender Does Not Startissue, then don’t worry as after applying the below-given fixes you can easily overcome the Windows defender problems with ease.

But, before applying the solutions, let’s discuss over the few points of Windows Defender errors and issue.

The main problem is- Windows Defender gets disabled automatically and when a user tries to enable it, then they become unable to Start Windows Defender at all.

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Whenever user clicks on the “Turn ON” option to enable it then the system will throw an error message “This app has been turned off and isn’t monitoring your computer.

This scary error message is not good for any Windows system, as it left the system without any antivirus protection.

But when you navigate to the Settings > Update & Security > Windows Defender then you will see that the Real-time protection in Windows Defender is enabled but it’s grayed out.


Fix Windows Defender Does Not Start

Solution 1: Check for the Date & Time of your PC/Laptop

Step 1: First, click on the date and time and then choose “Date and time settings.” Click on the “Set Time Automatically”, to “on.” OR click on the “Internet Time” and check the “Automatically synchronize with Internet time server.”

Step 2: Choose server “” and click on the update and “OK”.

After doing this and updating the data/time of your system check for the “Fix Windows Defender Does Not Start issue or not” is fixed or not.


Solution 2: Start Windows Defender Services

Step 1: Open the run box by pressing Windows + R and then type the services.msc in it and press Enter key. This will open up the Service Window.  

Step 2: Now, you have to search the below given services in the Services window:

Windows Defender Antivirus Network Inspection Service
Windows Defender Antivirus Service
Windows Defender Security Center Service

Step 3: After finding them, double-click on them one by one and confirm that their Startup type is set to Automatic and click on the Start if the services are not in the running condition.

Step 4: Click on the ok and then Apply. At last, restart your PC.


Solution 3: Turn on Windows Defender from Registry Editor

Open the registry editor window, to do this open the run dialogue box (Press Windows + R)   type regedit and press the Enter key.

After opening it, go to the below given registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender

Highlight the Windows Defender present in the left window pane and then double click on the DisableAntiSpyware DWORD present in the right window pane.

Note: In case you are unable to find out the Windows Defender key and DisableAntiSpyware DWORD then you have to create this manually.

Now, you have to change the value from 1 to 0 in the value data box of DisableAntiSpyware DWORD.

At last, restart your PC or Laptop to save changes.


Also Read: How to Fix Windows 10 Defender Unexpected Error and Microsoft Defender Threat Service has Stopped Error?


Solution 4: Uncheck Proxy

Open the run dialogue box (Windows + R) and then type “inetcpl.cpl” in it and press the Enter key to open the Internet Properties.

After it, go to the Connections tab and choose LAN settings.

Unmark Use a Proxy Server for your LAN and check “Automatically detect settings

Now, click Ok the Apply and then restart your PC.


Solution 5: Refresh or Reset your PC

Open the Update & Security option by pressing Windows Key + I and select Windows Key + I

Now, from the left-hand menu choose the Recovery and click on the “Get started” present under the Reset this PC.

Choose the option to Keep my files. Now, follow the onscreen instructions to complete the process.

This process will take some time and your computer or Laptop will reboot.



That’s all about “This app has been turned off and isn’t monitoring your computer.” Error message, all the above-given solutions are effective and able to deal with this issue.

After fixing this issue, it is also suggested to scan your Windows system with the help of a professional PC Error Repair Tool. This software is specially programmed to deal with all types of error and issues of Windows system. If you are suffering from slow PC issue then don’t worry as you can easily deal with this frustrating situation with the help of this tool.

Top 7 Solutions to Fix Windows Defender Does Not Start
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Top 7 Solutions to Fix Windows Defender Does Not Start
Apply the given top 7 Solutions and fix Fix Windows Defender Does Not Start issue on Windows 10 solution. All the given solutions are completely tested and easy to apply.
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