Uninstall other antivirus software and restart the computer, and try to enable real-time protection; 2. Use special tools to completely clear residual files and registry entries; 3. Run the built-in Windows troubleshooting tool to fix the problem. If you encounter the problem that the real-time protection of Windows Security Center cannot be enabled, you can usually solve it by uninstalling third-party antivirus software, cleaning up residual data, and using the system's own troubleshooting tool. After operation, restart the device and recheck the settings.

The real-time protection of Windows Security Center cannot be enabled, which is a problem that many users will encounter. It is usually not because of a system that is broken, but because of some settings, conflicts or permission issues. Let me tell you how to deal with it in a few common situations.

Check for third-party antivirus software conflicts

In many cases, real-time protection cannot be opened because you installed other antivirus software. For example, Kaspersky, Turfur, 360, etc., these programs often take over the system's security protection functions, resulting in the real-time protection of Windows Defender being automatically turned off.

Solution:

• Open "Settings" → "Apps" → "Apps and Features" and uninstall other antivirus software.
• After uninstalling, restart the computer, and then go to the "Windows Security Center" to see if real-time protection can be turned on.
• If you don't plan to use other antivirus software, it's best to completely remove residual files and registry entries (you can use a dedicated uninstaller such as Revo Uninstaller).

Use the built-in troubleshooting tool

Windows comes with a security center problem-solving tool, which can sometimes automatically fix some minor problems.

Operation steps:

• Open Settings → System → Troubleshooting.
• Find "Other Troubleshooting" or search directly for "Windows Security Center".
• Click Run, follow the prompts to check and fix the problem step by step.

Although this tool cannot solve all problems, it can quickly troubleshoot some common configuration errors or service exceptions.

Start related services manually

If the above method is useless, it may be that the relevant background service is not running normally.

Operation steps:

1. Press Win R to open the run window and enter services.msc to enter.
2. Find the following two services in the service list:
   • Windows Defender Antivirus Network Inspection Service
   • Windows Defender Antivirus Service
3. Right-click on them and select Restart.
4. If the service status is "Stopped", right-click the property and change "Startup Type" to "Auto".

Sometimes the service is disabled or errors, and manually restarting can make real-time protection take effect again.

Reset Windows Security Center Components

If none of the above methods work, you can also try to reset the relevant modules of the Security Center through the PowerShell command.

Operation steps:

1. Open PowerShell as an administrator (you can search for "PowerShell" in the Start menu and right-click "Run as an administrator").
2. Enter the following command to enter:

 Add-MpPreference -ExclusionPath "C:\Program Files\Windows Defender"

Then execute:

 Set-MpPreference -DisableRealtimeMonitoring $false

If you don't know the command line very well, you can also try running a one-click repair script (note that the source must be reliable), but it is recommended to back up the system or create a restore point first.

Basically these common methods. Sometimes it may be that a certain service is banned, just restart it; it may be that the software conflict or permissions are complicated. Follow the above method step by step, and it can be done in most cases.

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