How to Fix Blue Screen Errors Mfewfpk.sys or Epfwwfp.sys
By Timothy Tibbettson 07/18/2023 |
If you're getting a blue screen error with either Mfewfpk.sys or Epfwwfp.sys during, or after a Windows 10 upgrade, here's why, and how, to fix it. You may also be receiving the dreaded 'DRIVER IRQL NOT LESS OR EQUAL' error.
We do know that mfewfpk.sys are associated with McAfee security products and mfewfpk.sys is associated with ESET security products. If you have McAfee or ESET installed, then we know who the culprit is. Both methods to solve the blue screen are almost identical.
If you are unable to get past the blue screen, you'll want to boot into Safe Mode.
Eset Products
We're going to need to uninstall ESET using one of the following two methods, then open PowerShell to make sure the file was deleted.
You can remove ESET in one of two ways:
1: If you have an uninstaller available, for example, IOBit Uninstaller, we'd use that because it should remove all files including, hopefully, the problematic epfwwfp.sys.
2: The ESET AV Remover can remove any antivirus app. While it's designed (for some reason) to uninstall any existing antivirus apps before installing ESET, it can also remove, you guessed it, ESET.
Next, you'll want to open PowerShell and type in:
DEL /F /S /Q /A “%systemroot%\System32\drivers\epfwwfp.sys”
Including the quotes. Press the Enter key. You might get an error if you used an uninstaller that already deleted epfwwfp.sys. Reboot, and the problem should be solved.
McAfee Products
We're going to need to uninstall McAfee using one of the following two methods, then open PowerShell to make sure the file was deleted.
1: If you have an uninstaller available, for example, IOBit Uninstaller, we'd use that because it should remove all files including, hopefully, the problematic mfewfpk.sys.
2: The McAfee Removal Tool (MCPR) was designed for the complete removal of McAfee Security products before reinstalling, for example.
Next, you'll want to open PowerShell and type in:
DEL /F /S /Q /A “%systemroot%\System32\drivers\mfewfpk.sys”
Including the quotes. Press the Enter key. You might get an error if you used an uninstaller that already deleted mfewfpk.sys. Reboot, and the problem should be solved. If not, open PowerShell again and run this command a second time.
If you have now uninstalled McAfee or ESET, you might just let Windows Defender take over, especially if your antivirus came as a free trial with your computer.
Similar:
Fixing Random Blue Screens (BSoD) With Different Errors
Troubleshooting Windows 10 Blue Screen Errors
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We do know that mfewfpk.sys are associated with McAfee security products and mfewfpk.sys is associated with ESET security products. If you have McAfee or ESET installed, then we know who the culprit is. Both methods to solve the blue screen are almost identical.
If you are unable to get past the blue screen, you'll want to boot into Safe Mode.
Eset Products
We're going to need to uninstall ESET using one of the following two methods, then open PowerShell to make sure the file was deleted.
You can remove ESET in one of two ways:
1: If you have an uninstaller available, for example, IOBit Uninstaller, we'd use that because it should remove all files including, hopefully, the problematic epfwwfp.sys.
2: The ESET AV Remover can remove any antivirus app. While it's designed (for some reason) to uninstall any existing antivirus apps before installing ESET, it can also remove, you guessed it, ESET.
Next, you'll want to open PowerShell and type in:
DEL /F /S /Q /A “%systemroot%\System32\drivers\epfwwfp.sys”
Including the quotes. Press the Enter key. You might get an error if you used an uninstaller that already deleted epfwwfp.sys. Reboot, and the problem should be solved.
McAfee Products
We're going to need to uninstall McAfee using one of the following two methods, then open PowerShell to make sure the file was deleted.
1: If you have an uninstaller available, for example, IOBit Uninstaller, we'd use that because it should remove all files including, hopefully, the problematic mfewfpk.sys.
2: The McAfee Removal Tool (MCPR) was designed for the complete removal of McAfee Security products before reinstalling, for example.
Next, you'll want to open PowerShell and type in:
DEL /F /S /Q /A “%systemroot%\System32\drivers\mfewfpk.sys”
Including the quotes. Press the Enter key. You might get an error if you used an uninstaller that already deleted mfewfpk.sys. Reboot, and the problem should be solved. If not, open PowerShell again and run this command a second time.
If you have now uninstalled McAfee or ESET, you might just let Windows Defender take over, especially if your antivirus came as a free trial with your computer.
Similar:
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