Core Isolation turned off due to WDCSAM64_PREWIN8.SYS incompatibility

Anonymous
2022-09-02T19:09:56+00:00

I have been running Windows 11 successfully on my Microsoft Surface for some time now with no problems.

Within the last day or so, I all of a sudden got a notification that Core Isolation has been disabled due to an incompatible driver, WDCSAM64_PREWIN8.SYS.

From what I can see, this driver is related to Western Digital. However, I do not have any Western Digital devices attached to my Surface, nor have I recently added/installed anything from Western Digital.

I have tried searching for this driver but have come up empty.

Surface | Surface Pro | Safety and security

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.

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Anonymous
2022-11-28T10:37:21+00:00
  1. Select the Startbutton and type “Core isolation”.
  2. Select the Core Isolation system settings from the search results to open the Windows security app.

On the Core isolation page, you’ll find Memory integrity along with the toggle to turn it on

  • If you receive a notification / message says that the memory integrity can't be turn on follow the below steps.
  1. Try to scan and fix.
  2. If it is not solved, please click on "Review any driver incompatibilities".

3.We can see a driver or more.

  1. Please note the published name here is "oem46.inf"
  2. Select the Start button and type “Device Manager" and follow as shown below.

  1. Select the right driver from Device manager"oem46.inf" and right click and select remove driver.

Example :-

7. System needs to be restarted after removal of the driver.

Hopefully this will solve your issues no need to install any software for this.

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  2. Anonymous
    2023-08-02T15:23:36+00:00

    Thanks for the help, the problem got solved a good while ago, but I don't know how to turn the question off, or post : problem solved. I keep getting more help. Sorry for the inconvenience.

    Have a nice day all.

    W.E.

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  3. Anonymous
    2023-07-13T17:50:45+00:00

    thank you!

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  4. Anonymous
    2023-07-10T15:54:28+00:00

    i did just that: delete oem46 hoping to get rid of WDCSAM64_PREWIN8.SYS. and it did not work...

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