WIN+L to Lock screen shows a white screen?

[halcyon]

We share a computer, and when someone else wants to login, they hit WIN+L to get to the logon screen, and login to their account. Sometimes when they press WIN+L, instead of showing the Windows 10 login screen, they are met with a white screen, with no way to get around it. At that point, a restart is needed in order to get around it. No malware is detected on the computer, and I have create switch user shortcuts so they don't have to use WIN+L anymore. Any idea what would cause a white screen like this? I know there was the Reveton malware (White Screen Virus) but doubt it is related to that as nothing was detected on my system, and everyone besides me is running as a standard user for anything to be installed. Thoughts?

 

[win10user1]

I'm having the same issue since a few days ago. I have not restarted my laptop since, only put it to sleep, so can't say if restarting will help resolve it in my case. However, a temporary fix is to press Ctrl+Alt+Del when on the white screen, and that would take you to the login screen like usual. If anyone knows why this is happening, I would like to know as well. I'm using 64-bit Windows 10 Education.

 

[burgertime78]

I have the exact same problem. I'm running Windows 10 Home 10.0.10586 Build 10586. It's driving me nuts. ESET NOD 32 found no malware/virus. I can hit ctrl-alt-del and that will get me back to the login screen, so no harm no foul, but I'd rather things just work how they are supposed to. Any suggestions?

 

[Scorpio X]

Hi guys,
I had the same problem as you described. After a windows update this week the lock screen went blank, making it troublesome to login. Thank you win10user1 for your workaround. I also could use my (pre-configured) fingerprint reader as a workaround.
However: After reading this thread one thought stroke me: What if the problem is the login-in image? I have had a custom lock-screen image. So I tried to change it to a standard and it made the trick! Changing back to my custom image was not either a problem.

To be clear: Control Panel -> Adapt -> Lock screen -> Click one of the standard Windows images. No need to save anything.
Press Win+L to test.

Hope that is the solution for you!