Unsolved Change Lock Screen Background with a Corporate Image for All user

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hello guys
We are tryng to customize our first image of Windows 10 Enterprise in order to start the Deployment. Actually i'm using the Anniversary Edition(Release 1607 build 14393).
We would like to customize the image as we did in windows 7 before add the Workstation in the domain. I simply

1. restart the Workstation in audit mode
2. i try to change the Lock Screen Background copying our background image into C:\Windows\Web\
   then i tried to set it by the the Personalize menu, browsing the corporate image as a Background in the Lock Screen. But in the preview the image is blank and nothing change.
   I used google to look for a solution but i didn't find nothing that worked for me. Could you tell me if is a bug and/or if there is a method to change it?

Hey Giovanni,

Have you tried copying the image to a different location? I am currently looking into this for you and a few things that might be causing an issue:

1- The location of image might be an issue

• This is a system folder and requires administrative privileges to access
• When you use the Action Center>>Windows Settings>>Personalization>> Lockscreen settings, it is running in the context of modifying the user profile (no administrative level privileges needed)
• Try moving the image to the default user profile C:\Users\Default\Pictures

2- Make sure that the sysprep doesn't remove the file
3- Format might be an issue
4- Activation before customization

• Windows requires activation before customization and this might be an issue.

I have been able to change to a custom lockscreen image from C:\Users<username>\Pictures and C:\Windows\Web but on the second location I had to be an administrator to even get the image in the location. These are a few things to consider and I will look into this more!

Tanks Wes i will try to follow your advice and i will let you know.

I don't know but seems that the release we have (Windows 1o Enterprise release 1607 build 14393) seems to have this problem. I have a Windows 10 Pro at home and i have changed the lock screen Background without any problem. I tried also by a local gpo to force a Lock Screen Wallpaper but it's not applied. The screen remain blue

I'm not able to change the default picture with the others provided by Microsoft under c:\windows\web\Screen.

My target would be to have Corporate Wallpaper and if it's possible also a Lock Screen Wallpaper for all users.