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SteveWest-7365 avatar image
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SteveWest-7365 asked ·

Unified Write Filter - Maintenance Mode Stuck on Black Screen

We're investigating using UWF instead of Faronics DeepFreeze, and up until now our tests with UWF were going fairly well. But on my first test of the maintenance mode I seemingly got a bunch of updates installed, followed by a black screen with mouse cursor. No keyboard inputs work (CTRL-ALT-DEL, etc) but pressing the power button will shut down the machine. Unfortunately, turning it back on results in the same black screen with cursor. I see numerous other posts online asking about this with no resolution, and it looks like it's been going on for many months, if not years. Is there a fix for this, and if not can we get some kind of response from an official MS rep to tell us whether or not we should ever expect a fix? I'm becoming increasingly annoyed with the lack of support for these extra tools MS dangles in front of us (like Provisioning), only to supply minimal documentation and no fixes to problems. Either commit to documenting and fixing a product or just don't release it. Seriously.

windows-10-generalwindows-iot-10-core
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JennyFeng-MSFT avatar image
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JennyFeng-MSFT answered ·

Hi,
There seems to be no relevant fix information at this time.
Also, you can use the Feedback Hub app to share your problem and wait for the next update.

If we have any updates or any thoughts about this issue, we will keep you posted as soon as possible.
Your kind understanding is appreciated.

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SteveWest-7365 avatar image
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SteveWest-7365 answered ·

Further to this, since I was able to access the Event Logs remotely, I had a hunch that the computer wasn't totally broken. So on that black screen I just hit the spacebar, typed my password and hit Enter. I was logged in to the computer and now sit at the desktop. So it looks like this glitch is simply preventing the login screen from showing properly. Any thoughts on this? Edit: Interestingly, after a while with no input, the PC will lock itself and does show the lock screen just fine.

Edit
Here's a non-exhaustive list of what I've tried:

  • Turn off fastboot.

  • dism.exe /online /cleanup-image /restorehealth.

  • Disabling all non-MS startup programs from MSconfig.

  • Boot repair.

  • Disabling the video device and deleting the driver.

  • Uninstalling all the updates that I could.

  • Safe mode with low-res graphics

  • Disabling App Readiness in services.msc

  • Checking that explorer.exe is set as the registry entry for HKEY_Local_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon.

  • sfc /scannow

  • And a couple less-likely culprits as well.

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UWF maintenance mode is for downloading Windows update, but there is a script in the back end that could be adjusted to do more. Did you see any new Windows updates being installed?

Are you building a generic computer or a dedicated embedded/IoT system? If the later, I recommend controlling the updates rather than letting Windows update run and possibly breaking something.

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We're looking at using this for our student labs, to replace DeepFreeze. So from what you're saying, it would be best to not use servicing mode and just turn off the filter during our normal maintenance times to let WSUS/InTune do its thing?

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In embedded/IoT systems, I recommended disabling UWF, update, and re-enable UWF. I recommended controlling the updates since system can be spread out far and wide. IN you case, this is a much more controlled environment. If all your are doing is providing Windows updates via WSUS, UWF servicing mode should work. I cannot speak to InTune modifications.

Did you see any updates being applied within update history? Anything in the Event Log?

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