Lock Screen

I have installed 25h2. I have 2 off line accounts admin1 and admin2.
I have set everything up in admin1 including a lock screen that i have setup using the following "Computer Configuration > Administrative Templates > Control Panel > Personalization" in GPEditor
but when i sign out and click on admin2 it changes the image back to the stock blue one why ?

Windows Build/Version25h2

Because personalisation items are independent for each user.
See, for its Registry HKCU refs,
Change Lock Screen Background - ElevenForumTutorials


All the best,
Denis

I don't think that there's any way of forcing a lock screen other than using the technique discussed here:

Post in thread 'Set lockscreen wallpaper with command prompt'

I think that there is a group policy that stops users from changing the lockscreen using the GUI, but it doesn't force a particular lock screen, or prevent changing the lock screen via the registry. I think that I remember this from windows 10.

IBennington said:

I have installed 25h2. I have 2 off line accounts admin1 and admin2.
I have set everything up in admin1 including a lock screen that i have setup using the following "Computer Configuration > Administrative Templates > Control Panel > Personalization" in GPEditor
but when i sign out and click on admin2 it changes the image back to the stock blue one why ?

Windows Build/Version25h2

Click to expand...

Name image "LockScreen.png" in same folder as .bat and run bat as Admin

We've had this discussion before on the cross-posted thread.

PersonalizationCSP works to enforce an image, but the user loses the right to change it again from Settings. It's intended for an enterprise environment, where you're forcing the same background on all users.

i've applied it many times and never had an issue. you do have to do it per user account though. if you dont want to run that per user, you can apply it, browse to:

C:\ProgramData\Microsoft\Windows\SystemData\USER_SID\ReadOnly\LockScreen_
*take ownership of systemdata to get into it*
*_whatever letter has the correct lockscreen images*

copy all of the resolutions in there to a folder elsewhere
make sure each user has logged on, off and restart the pc
go back into that folder and paste/overwrite all other images in ALL other Lockscreen_ folders

did that 3-4 years ago and have never had any update/upgrade, etc mess with my lockscreen.

Read the other thread. @Skeptic Mike goes into a good technical review of the merits of PersonalizationCSP.

Taking over protected system rights should be avoided, whenever another non-elevated solution is available. Especially one that doesn't require copying multiple versions of the image file.

I think you can set the desired image in lock screen per user and globally using Winaero Tweaker, but I don't remember for sure.

An attempt to answer the original question

IBennington said:

I have set everything up in admin1 including a lock screen that i have setup using the following "Computer Configuration > Administrative Templates > Control Panel > Personalization" in GPEditor
but when i sign out and click on admin2 it changes the image back to the stock blue one why ?

Click to expand...

You don't say which policies you have tried to set.

'Force a specific default lock screen and logon image' only applies to Enterprise, Education and Server SKUs. You say you have Pro, so it should do nothing.

'Prevent changing lock screen and logon image' should work.

So if you have tried to set both or the second one only, the admin2 account is showing exactly what the policy says: "and they will instead see the default image."

Another way of posing your question might be: "Why doesn't admin1 see the default image?" because that policy should be applied to both accounts.

My experience on 23H2 and 24H2 is that the default lock screen is actually Windows Spotlight, so the policy is having an effect.

I assume that you set the lock screen image for admin1 using the personalisation options in Settings. But that hasn't changed with the 'Prevent changing lock screen and logon image' policy. My best guess is that what the policy actually does is to set the lock screen to picture, which means that it will be the default image unless the user has already chosen one. If you switch from picture to slide show or spotlight in Settings, then switch back to picture, then the actual image will still be your last choice. New accounts will necessarily get the default image.

In the thread I cited in my first reply, there is a script that @garlin wrote that enables you to set the lock screen type (and the image if you choose picture). It would be interesting to know if that works with the 'Prevent changing lock screen and logon image' policy in effect. And if so, does it only work untli the policy is reapplied.

My further guess is that the 'Prevent changing lock screen and logon image' policy might work in conjunction with the PersonalisationCSP settings to prevent spotlight from working in the background. I don't really have the facilities to check these guesses at the moment.