Windows 10: Change Lock Screen Background in Windows 10
As I said in a previous post Win 10 Pro x4 build 10240 showed the picture correctly until it was updated. It then reverted to what you see above until the next update, which came soon afterwards. Updating to version 1511 Build 10586-36 left it working correctly but Build 10586-63 seems to have broken it yet again.
I have tried ALL the images, all show EXACTLY the same under the same conditions i.e. CTRL-ALT-DEL on NO image on the screen prior to the accounts page but Windows Background Picture shows on that page. CTRL-ALT-DEL off, my picture on screen that is showing green with but Windows Background Picture shows on accounts page, exactly as set.
You are misunderstanding. The lock screen image you set in Settings will only show on the lock screen while you are signed in to Windows. This is the "your" user lock screen (Win+L).
The green screenshot in your post is for the "default" lock screen that you having the issue with. This is the lock screen that shows at startup when secure sign-in is enabled.
This is what I see after booting:
Followed after pressing Ctrl-Alt-Del by:
If I disable Ctrl-Alt-Del screen one becomes my picture and then needs any key pressed to continue to screen 2.
The green screenshot in your post is of the "default" lock screen that you are having the issue with. This is the lock screen that shows at startup when secure sign-in is enabled.
The lock screen image you set in Settings will only show on the Win+L lock screen while you are signed in to Windows, or at startup when you do not have secure sign-in enabled and your account was the last user.
This is NOT what happened with 10586-36!!
I got the image on the FIRST screen after booting with Ctrl-Alt-Del enabled (It has always been enabled on my laptop) so something in 10586-63 has broken or corrupted something. This seems to be an ongoing problem, updates break settings, get sorted then things suddenly start working correctly again, but seemingly not this time!
I'm just letting you know what the screen is of for proper reference, and for how it behaves in 10586.63 in a VM and build 11099 for me. That's all.
Why it changed for you could indeed be from the update. What I posted above for the "default" lock screen is what I recommended to give a try to change this secure sign-in "default" lock screen back to what you wanted instead.
I have tried using the default pictures, they do exactly the same as my own picture. It seems that updates on Windows 10 are a risky business, you can't guarantee that a properly working PC will still work afterwards. They seem to need more testing to make sure that stupid problems such as this do not occur. I still wonder if the age of the laptop has something to do with the problem, my laptop is nearly 7 years old and I do not want to update as they don't make 1920x1080 RGB LED 16" screens, which I have, any more, pity!
I don't think the age of the laptop would be related.
However, do you have some sort of Alienware theme or skin installed that could have been used for this?
After doing some more testing and playing using either option in the tutorial below changed the secure-sign in "default" lock screen to the image I specified for the policy.
I hope this will work for you as well.
Last edited by Brink; 18 Jan 2016 at 20:02.
Reason: updated with new tutorial link
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