this post was submitted on 06 May 2025
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iiiiiiitttttttttttt
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you know the computer thing is it plugged in?
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Since this seems like a preventable issue for me, I wanted to disable the Set As Desktop Background… option in Firefox.
That was not as straightforward as I thought it would be:
What you have to do is create a
policies.json
file and put that somewhere…Here is the deeply buried site from Mozilla about that. There you will find where to put it and all the options.
For this problem a short
policies.json
with the following content is enough:Why did I do this in the middle of the night instead of browsing ich_iel or I dunno sleeping. Who knows…
Instead of locking down the the ability to set the wallpaper via Firefox, just set a static image as the wallpaper via GPO. A company logo or something. Then it will apply at every restart.
In a corporate environment where you care about such things, you really want to disable the functionality of the user setting the background in the operating system, not in a specific application. Otherwise, you're going to have to track down every application that includes this functionality, figure out how to disable it it in that application, and find a way to apply that change to every PC. (Microsoft's Photos app, for example, can set pictures as either background or lock screen.)