This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
I can't turn on core isolation due to outdated driver usb2ser.sys. This is a Windows 7 driver and no update is available. How do I delete a system file/driver?
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
Hi BigShotBenjamin
I am Dave, I will help you with this, that is an old MediaTek USB driver.
Open File Explorer, then navigate to C:\Windows\System32
Search for usb2ser.sys
Then right click the version of that driver that was found in the Drivers folder and select Rename, and rename that file to usb2ser.sys.old
Then restart your PC and that will stop that driver loading
If you have any difficulty renaming that file, boot into Safe Mode and rename it from there.
Dave, thanks for the input. However because it is a system file I have to have system authorization to rename it. How do I get that?
Hi BigShotBenjamin
Just checking in with you, did you perform those steps, or did you experience any difficulty with the steps?
Hi BigShotBenjamin
That's correct, if you boot into Safe Mode, you should not get a permission error.
Hi BigShotBenjamin
if you are getting an error when trying to rename that file, boot into Safe Mode and from there, you should be able to rename the file
