Implementing a wallpaper to your desktops within your office using a GPO is super easy and you can actually centralize the wallpaper into a share folder.
Step 1: Create a folder to drop your wallpaper into:
Step 2: Right click the folder and share it out. I added a $ to hide the folder
Step 3: Click on Permissions and make sure the Everyone is set to Read
Step 4: Add or make sure Domain Users is part of the security tab and set it as Read & Execute
Step 5: Create a GPO policy within the Group Policy Managment
Step 6: Right click on the new GPO and click on Edit
Step 7: Go to User Configuration > Administrative Templates > Desktop > Desktop > “Desktop Wallpaper”
Step 8: Click on Enabled
Step 9: Make sure to use the UNC path for the location of your wallpaper
