If you are trying to tighten up your security by adding Virtualization-Based Security (aka VBS) to your Windows 11 you might find this error:
Core Isolation Memory Integrity
Incompatible Drivers WDCSAM64_PREWIN8.SYS
Driver date: 11/29/2017Driver version: 1.2.0.0Published name: oem26.inf
This is an old driver that ships with both Windows 10 and Windows 11 and very few people need it. In fact we have never run into a situation of any machine using WDCSAM64_PREWIN8.SYS .
Fortunately, it is very easy to remove:
You do NOT need a reboot so you can immediately retry to enable CORE ISOLATION and you should see a prompt to reboot once Core Isolation > Memory Integrity is turned ON.
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Thanks, the above step worked. I had the issue with oem65.inf for Sennheiser Communications.
I used this method and it worked to get rid of the file. My issue is, I still can't turn on the Memory integrity, due driver incompatibilities. I have restarted my computer and still same issue. When I look to resolve any incompatibilities there are no drivers listed.
same result - "one or more devices using the same specified INF". Without oem-number : "the specified file is not installed oem inf."
I also had the same issue where it was telling me that I could not delete the driver. But if you put a space, then type /force it will delete the driver without issue. Just copy this command and replace the with your specific INF number. pnputil /delete-driver oem.inf
I had the same message as Don when trying to remove driver oem47.inf in Windows 11 (Western Digital MyBook)
Did you run "As administrator"?
I tried the above solution but got the following message: Failed to delete driver package: One or more devices are presently installed using the specified INF. Suggestions?
Thanks for this uncomplicated documentation und solution
I did this an no errors where found.
I am NOT allowed to delete mine with the name oem19.inf (WDCSAM64_PREWIN8.SYS) so i guess i have to live WITHOUT core security . I have an external and an INTERNAL WD (i think this is why they wont allow me to delete it .Dont buy WDC its CRAP
Were you accessing cmd as administrator? Hold ctrl+alt+shift before you hit enter and it should open it with admin privilege.
When you run the Terminal / Powershell, whichever you choose, make sure to choose the Admin version. If it doesn't show an admin version, be sure to right-click the terminal entry and choose "Run as administrator".
tried this to remove oem140.inf, access denied. Anybody help? thanks
I solved this issue following the following simple and detailed instructions:
SOLVED: Core Isolation Memory Integrity Incompatible Drivers WDCSAM64_PREWIN8.SYS
Published by Ian Matthews on November 8, 2021