APC Index Mismatch- Windows 10 Pro 64 bit

Hi Gaerisch,

Thank you for being a part of Windows 10.

I appreciate you for providing details about the issue and your effort towards resolving it.

Try the following methods and check if it helps:

Method 1:

Step 1: Start the computer in Safe mode.

Please refer the below link to start the computer in Safe mode and check if it fixes the issue:

http://windows.microsoft.com/en-in/windows-8/windows-startup-settings-safe-mode

Note: The steps for Windows 8.1 applies to Windows 10.

If the issue is not occurring in Safe mode then, place the computer in a Clean Boot and check.

Step 2: Perform a Clean Boot and find out which application/service is causing this issue.

A clean boot helps to eliminate software conflicts and to determine what is causing the problem. Perform a clean boot on the computer by following the steps given in the link:

http://support.microsoft.com/kb/929135

Note: The steps for Windows 8.1 applies to Windows 10.

Disclaimer: Please go through the section: How to reset the computer to start as usual after troubleshooting with clean boot of the Kb article to boot the computer in normal startup after fixing the issue.

If the issue persists then follow the below method.

Method 2:

I suggest you to update the Display adapters driver from the Device Manager and check if it works.

Follow the below steps: 

1. Right click on Start button and click on Device Manager.
2. Select the Graphic driver from the list by extending Display adapters.
3. Right click on the Graphic driver and click on Update driver Software.

If the issue persists then, I would recommend you to download and install the latest video driver for the manufacturer and check if it works.

Reference: Refer to the following Microsoft article on Bug Check 0x1: APC_INDEX_MISMATCH.

https://msdn.microsoft.com/en-us/library/ff557419%28v=vs.85%29.aspx?f=255&MSPPError=-2147217396

Reference: Refer to the following Wiki article created by Suzy_G on Windows 10 Install and Upgrade Top Solutions.

http://answers.microsoft.com/en-us/windows/wiki/windows_10-windows_install/windows-10-install-and-upgrade-top-solutions/a59d8a6a-18da-417b-93a6-7b6ab4d03896

Kindly let us know if you need any further assistance with Windows. We are happy to assist you.

Thank you.

Agree with Harshavardhan Rathod  Apart from anything once the PC has rebooted after the APC_IMixmatch error it will carry on working fine for days / weeks before it occurs again so running in Safe Mode perpetually isn't really a solution. I've had it on five occasions since I updated to WIndows 10.

Have to say that, although it's annoying, it does just dump you back to where you were 5-10 minutes earlier but I'd still like a better way of finding out what driver it is - if that is what is causing the problem.

I was working offline, using Works, and had the same thing happened too me.

It then downloaded some supposed updates, and I'm back-up again.  This is

weird, and I don't know what to think.  I never had this happen on any computer

before, including the large non-personal computers.

I recently started having this problem on my HP EliteBook 8460P, after more than a year running fine with Windows 10.

I have the blue screen when I try to use the webcam in SKYPE, that I've been using with no problem since I upgraded the laptop to Windows 10.

Of course I updated all drivers, no change.

Today I even did a 'PC reset', and then I reinstalled only SKYPE... as soon as I tried to run the webcam via this application, the laptop chrashed.

Any suggestion?

Many thanks and Happy Holidays!

Thanks for posting Claudio!  I have the same issue and can confirm that a PC Reset does not resolve it. 

Symptom Recap - I can't use the Sunplus/Realtek integrated webcam on my Lenovo X1 carbon even though the driver is up-to-date and Device Manager reports that the device is working normally.  Attempting to initiate a Skype (any version) video call immediately produces the BSOD and posts a QR code with the text "APC Index Mismatch" error

Windows 10 Version / Build = 14986.rs_prerelease.161202-1928

I'm on the slow path for pre-release pushes but would happy to change that to get this fixed soon.

Hi.

I started another discussion on this issue, as this one seemed to me a bit old.

I resolved the issue only by formatting the laptop and reinstalling the Win 10 Pro production build.

I do hope someone in MS will look at it, as I'm scared that the next production build will reintroduce the bug...

Happy Holidays!

Hi Claudio,

Thanks for the tip and incredibly kind follow up.  I took your advice!  The good news is that using my  integrated webcam no longer crashes my X1.  I also disabled the insider participation to avoid recreating the problem.

Thank you so much!

Michael