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If you receive Windows Resource Protection could not perform the requested operation, when you go on to Run System File Checker or sfc /scannow in Windows 10/8 / 7, then this article is for you.
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How To Fix Windows Resource Protection Could Not Perform The Requested Operation In Windows 10
Method 1. Run System File Checker in Safe Mode • If this happens, you may try to Run SFC in Safe Mode. To do that, follow these steps below: • Step 1. Press Windows Key + R then type msconfig in the Run dialog box. Click OK. • Step 2. Switch to Boot tab. Under Boot options, tick on Safe boot. Click OK. • Step 3. Click Restart when asked by System Configuration. Your Windows will then boot into Safe Mode. • Step 4. You can now try to run sfc /scannow and check if it works.
Method 2. Enable Windows Modules Installer service • Step 1. Press Windows Key + R and type services.msc in the Run dialog box. Tap Enter or click OK to open Services snap-in. • Step 2. When the Services window appears, find Windows Modules Installer or the TrustedInstaller service. Double-click on it to open the service its Properties. • Step 3. Make sure that the Service is Started. If not, set the Startup type to Manual and then click on Start button. • Step 4. Click Apply > OK to save changes. You can now close Services snap-in. • Now, you can try to run sfc /scannow to check if it works.
Method 3. Using Command Prompt • Also, you could start a Command Prompt as an Administrator, type the following and press Enter: • net start trustedinstaller • Once the service is started, run sfc /scannow and this time it would run as expected. • Source: https://windows10freeapps.com/windows-resource-protection-could-not-perform-the-requested-operation/