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Windows 7: Cannot run SFC from Repair Disk

22 Feb 2011   #1

Windows Home Premium 64bit
Cannot run SFC from Repair Disk

Booting to my Win 7 Repair Disk and chosing Command Prompt Option, I enter as per Tutorial:
sfc /scannow /offbootdir=e:\ /offwindir=e:\windows

e: is my dvd drive where repair disk is.

The message I get is "Windows Resource protection could not start the repair service."

SFC never runs. What am I missing. Thanks in advance


My System SpecsSystem Spec
22 Feb 2011   #2
Microsoft MVP


The tutorial explains a few steps earlier that you need to determine Win7's drive letter by how it is listed when Repair detects it here:

SFC /SCANNOW : Run in Command Prompt at Boot

Cannot run SFC from Repair Disk-capture.png

Supply the Win7 drive letter which WinRE provides, as it can see letters differently than they appear in Windows.

My System SpecsSystem Spec
23 Feb 2011   #3

Windows Home Premium 64bit

Thanks for the tip Greg. Finally got it to scan.

My System SpecsSystem Spec

23 Feb 2011   #4

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86

Try this.

Click Start, type Services.msc. Double-click Windows Modules Installer. Set its Startup type to Manual. Click OK.

Now try running the scan.
My System SpecsSystem Spec
23 Feb 2011   #5

Windows Home Premium 64bit

Thanks for the extra input Bill. I did get it to scan as per Gregs post. I had checked to make sure the module in services was set to manual.
My System SpecsSystem Spec
10 Feb 2018   #6

Windows 7 Ultimate x64

I've faced this issue before. I ran the following commands to fix Windows resource protection could not start the repair service error.

Follow the steps below

1.Run Command Prompt as an administrator
2.Run this command sc config trustedinstaller start= auto then followed by command net start trustedinstaller

You might be presented with another error - To understand how to proceed from there read the linked article for solution.
My System SpecsSystem Spec

 Cannot run SFC from Repair Disk

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