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

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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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  1. Anonymous
    2022-10-28T20:12:49+00:00

    use windows terminal to delete the driver, it worked for me.

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  2. Anonymous
    2022-10-29T13:11:34+00:00

    Ich habe genau das gleiche Problem, aber auf einem Surface Book 2 von Microsoft.

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  3. Anonymous
    2022-11-01T16:13:04+00:00

    Tod,

    Thanks to you and everyone else on this thread. I used Drive Store Explorer and was able to Force Delete the Western Digital Driver that was preventing my Laptop from running Core Memory Security. As an FYI, I tried using Autoruns first, but it could not find this driver.

    Seriously though, IMHO, this should be a Microsoft fix. I'm a "bit technical", but could not imagine most folks could go around deleting drivers. This is for Microsoft if you're listening.

    Mike

    Your'e dead right Mike, but MS never listens! Can you imagine Mac users being told to perform such techie ****?

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  4. Anonymous
    2022-11-02T07:31:32+00:00

    Check out this thread - it helped me resolved the mentioned issue - Memory Integrity Can't Be turned On Due To Incompatible Drivers - - Microsoft Community

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