KB4041691 breaks Windows Hello and causes BSOD errors

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KB4041691 bugs

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Microsoft released an important Windows 10 Anniversary Update aimed at fixing system crashes. Update KB4041691 patches a series of memory corruption issues that result in random system crashes and which makes Internet Explorer more stable and reliable, among other things.

However, this update also brings a few issues of its own. Microsoft has already listed three known bugs on KB4041691’s support page, but users have also encountered two other, unexpected problems.

KB4041691 issues

Windows Hello fails to work

Users reported that KB4041691 breaks Windows Hello. The OS is unable to turn on the device’s camera, preventing users from logging in using this authentication tool. It appears that this issue affects mainly Surface devices.

Here’s how one user describes this problem on Microsoft’s forum:

Oct 11, 2017 Surface Book just updated with:
2017-10 Cumulative Update for Windows 10 Version 1607 for x64-based Systems (KB4041691)
immediately after updating it reboots and then Windows Hello at login says it can’t turn on the camera.
Settings app now says windows hello not available on this device, but it just worked right before the update
known issue? any fix?

The OP then contacted Microsoft’s Support engineers but couldn’t get a proper solution to fix this problem. Instead, they suggested upgrading to Windows 10 Creators Update.

BSOD errors

If you get BSOD errors after you install KB4041691, you’re not the only one. Quite a few users reported they too received error 0x000000e after the final reboot. They also confirmed that removing the update fixed the problem.

The good news is that BSOD errors should be history now. Microsoft fixed the root-cause of this issue and you should now be able to install the latest updates without any problem.

Have you installed KB4041691 on your Windows 10 computer? If you encountered other issues apart from the ones listed above, tell us more about your experience in the comment section below.

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