Windows Resource Protection Could Not Perform the Requested Operation

Position: How Tos - Disk Utilities - SFC Scannow Windows Resource Protection Could Not Perform the Requested Operation

'Windows Resource Protection could not perform the requested operation' error popups, when you run sfc.exe (System File Checker) to check the Windows system. How to do? This article introcudes 4 solutions that will guide you through to fix the error with ease.

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When Windows operating system does not behave properly, such as some function fails, crashes, or respond slow, we are likely to be recommended to carry out SFC Scannow in Command Prompt. The SFC (system file checker) is a handy tool built-in Windows system, and it has the ability to scan system files to check and repair corrupt, damaged, missing system files. Unfortunately, however, in some cases, the "sfc /scannow" command fails to complete, and you receive an error message saying Windows Resource Protection could not perform the requested operation.

What are possible reasons behind the SFC windows resource protection could not perform error? In fact, reasons are not clear yet, as Microsoft has not directly explained this. By analyzing cases we meet, we believe the issue has something to do with these factors: Something is preventing or having collisions with the SFC command; The Windows operating system running on your computer contains errors; there is a problem with the hard disk, such as bad sectors. It does not matter even though you cannot get clear about the causes, and you can continue reading to learn fixes.The rest part of this article will provide 4 methos to help you fix the "Windows Resource Protection could not perform the requested operation" issue.

How do I fix Windows Resource Protection could not perform the requested operation?

Reminder: Some solution might be risky, for example, repairing bad sectors can damage existing data, editing system files incorrectly may cause system crash. It is recommended to create a full backup of important files as well as the operating system before proceeding with following fixes.

Solution #1: Run CHKDSK Command

If your HDD has errors, SFC will fail to work and report errors. CHKDSK is a Windows system tool that can check your hard drive integrity, further more, CHKDSK can also fix various file system errors, so it can help solve the problem.

Step 1. Type cmd, in the search box on the Start bar, as followed:

windows resource protection

Step 2. Type cmd, select Command Prompt, and click Run as administrator, as followed:

windows resource protection

Step 3. When User Account Control appears, click Yes button, as followed:

windows resource protection

Step 4. In the Command Prompt window, type chkdsk /r, then press Enter key. Then you will be asked if you like to schedule the checking when the system restarts , type y, as followed:

windows resource protection

Step 5. Close the Command Prompt window, and restart your computer. Then, CHKDSK tool will start checking the hard drive and try to fix the file system errors detected automatically.

Step 6. Run System File Checker (SFC) again to see if it works correctly and the Windows resource protection could not perform the requested operation error has been fixed.

Solution #2: Run SFC in Safe Mode

Step 1. Press the Windows logo key and R key meanwhile, then the Run box will appear.

Step 2. Type msconfig and click OK button, as followed:

windows resource protection

Step 3. After System Configuration window appears, select Boot panel and check the Safe Boot option, as followed:

windows resource protection

Step 4. Then, click OK button. A query dialog will appear, click Restart Button, as followed:

Tip: Before restarting, save any open files and close all programs.

windows resource protection

Step 5. Your Windows will then boot into safe mode, and you can run sfc?/scannow?command again in safe mode to see if it works correctly.

Solution #3: Check and Repair Bad Sectors for Hard Disk

Bad sectors can cause a lot of problems on the computer, including the SFC not working error discussed in this article. So it is useful to check if there are bad sectors on hard drive. Here we use DiskGenius Free Edition to check and repair bad sectors, see steps below.

Step 1. Download and run DiskGenius, choose the hard drive you want to check bad sectors, and choose Disk -> Verify Or Repair Bad Sectors, as follows:

windows resource protection

Step 2. Then, you can click Start Verify button to check bad sectors on the selected disk, as followed:

windows resource protection

More info on checking or repairing bad sectors, refer to DiskGenius online help: Check and Repair Bad Sectors.

Step 3. After repairing bad sectors, you can run System File Checker (SFC) again to see if error has been fixed.

Solution #4: Enable Windows Module Installer

There is possibility that the SFC not working issue is caused by the disabled Windows Modules Installer service. Thus, we can try enabling this service to get the Windows Resource Protection to perform requested operations.

Step 1. Type services.msc in the searching box next to the Start menu to find out Service app in the searching result. Then choose Run as administrator.

Step 2. Navigate the listed services and locate Windows Module Installer. Right-click it and select Start option from appeared context menu.

Step 3. Restart computer and you should be able to execute SFC command.

Bonus Tip: Backup Windows system in advance

In fact, all these means above can not guarantee you always fix error appearing on your computer successfully, so the better way to avoid the problem and many other annoying errors is to backup the Windows system in advance.

DiskGenius is an all-in-one tool for data recovery, partition management, backup & restore and more. Further more, DiskGenius Free Edition covers data backup features that can help you backup the Windows system, and restore it back when Windows goes wrong. Besides, this program also supports to clone disk, clone partition, migrate Windows 11/10 to SSD, backup partition table, etc. for you. Now let's take a closer look at how to backup Windows system partition to an image file.

Step 1. Select the Windows system partition (usually drive C: ), then right click the mouse and select Clone Partition To Image File, as follows:

windows resource protection

Step 2. Click the Select Image File button, and you can brwose your computer to specify a location for the image file and name the image file. Then click Start button, and DiskGenius will backup the Windows system partition.

In addition, the software supports incremental backup, which means you can create multiple restore points. Hence you can restore computer back to a previous working status when certain error occurs. See Steps to Restore Partition from Image File.

windows resource protection

If you are interested in DiskGenius, free download it here to test it.

Isoo Bakcup is another choice when you want to backup the Windows system, it is more appropriate for novice users.

Isoo Bakcup main screen is shown as follows, you can visit to learn more.

windows resource protection

Frequently Asked Questions

1. How do I fix SFC Scannow not working?

If you are facing the issue that SFC command cannot finish scanning and fixing corrupt files, you can try these solutions to get rid of it: run disk error checking for hard drive, modify Security Descriptors in WinSXS folder, enable Windows Module Installer.

2. What happens if SFC Scannow fails?

If SFC Scannow command fails to complete the scanning (reach 100%), you will end up with an error message such as "Windows Resource Protection found corrupt files but was unable to fix some of them, proceed to the next step immediately blew" or "Windows Resource Protection could not perform the requested operation". To continue the task, you need to either parse the CBS.log file if system file checker fails or perform a Windows Repair Install according to the information shown in Command Prompt. However, you can also try other solutions to get this issue fixed, see solutions described above.

3. How do I fix Windows Resource Protection found corrupt files?

A couple of solutions you can try to fix found corrupt files, see solutions below. For step-by-step solutions, refer to this guide: [Solved] Windows Resource Protection found corrupt files.

  • Check and repair bad sectors using DiskGenius Free Edition
  • Run SFC in safe mode
  • Run DISM
  • Install Windows updates to repair potential errors

4. How do I fix windows Resource Protection Cannot start the repair service?

We suggest that you follow the steps below to get the problem solved. If these steps do not work, then refer to this page to get more solutions: Fixed: Windows Resource Protection could not start the repair service.

Step 1: Launch Command Prompt as administrator.

Step 2: Type sc config trustedinstaller start= auto and hit Enter key. Then you will receive a success message.

Step 3: Type net start trustedinstaller and hit Enter key.

Step 4: Type sfc /scannow and hit Enter key. This time the service should start without errors.

5. Why is my SFC Scannow not working?

There are several reasons accounting for the problem, for example, corrupted files, errors or bad sectors on the hard drive, system errors, etc. When SFC not working, you can use the DISM scan or CHKDSK command to get it fixed.


That's all. Hopefully one of the solutions discussed in this page can help you solve the sfc scannow windows resource protection could not perform the requested operation problem. If none of them works, you may have to consider restoring to a previous backup or trying a fresh reinstallation of Windows. Should you have any suggestion or questions regarding this topic, feel free to contact us.


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