Desktop Wallpaper Nightmares

Yeah, setting a desktop wallpaper with the "Fit" option via Intune is a pain because Device Restriction Profile only allows a public URL and lacks scaling options, while Settings Catalog seems to have inconsistencies when updating the image.

Here’s how you can properly set a wallpaper with the “Fit” option in Intune:

🔹 Solution: Use a PowerShell Script
Since Intune doesn’t fully support the "Fit" setting, you can deploy a PowerShell script via Intune to set the wallpaper and scaling mode manually.

1️⃣ PowerShell Script to Set Wallpaper with "Fit" Option
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$WallpaperPath = "C:\Windows\Web\Wallpaper\CustomWallpaper.jpg"

# Set registry key for Fit option (value 6 = Fit)
Set-ItemProperty -Path "HKCU:\Control Panel\Desktop" -Name WallpaperStyle -Value 6
Set-ItemProperty -Path "HKCU:\Control Panel\Desktop" -Name TileWallpaper -Value 0

# Apply wallpaper setting
RUNDLL32.EXE user32.dll, UpdatePerUserSystemParameters
2️⃣ Deploy the Script via Intune
Upload the wallpaper to C:\Windows\Web\Wallpaper (You can do this via a separate Intune script).
In Intune, go to Devices > Scripts > Add
Upload the PowerShell script
Set it to Run in the logged-on user's context
Assign it to the necessary devices
Restart Explorer.exe or log out and back in to apply changes
🔹 Alternative: Modify the Settings Catalog Deployment
If you must use Settings Catalog > Desktop Wallpaper, try these:
✅ Ensure the wallpaper file path is correct (check if it exists on the machine).
✅ Delete the old wallpaper and reapply policy (black screen may be due to a corrupt cached file).
✅ Force a Group Policy update:

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gpupdate /force
✅ Reboot the device after deploying the updated image.

💡 Summary: Best Practices
Method    Pros    Cons
Device Restriction Profile    Easy, no script needed    No "Fit" option, requires a public URL
Settings Catalog    Supports local files, fit options    Buggy when updating wallpaper
PowerShell Script    Full control, reliable    Requires scripting & deployment
👉 Best Choice? Use PowerShell for full control & ensure the Fit setting is applied correctly.