Set 'app.update.auto.migrated' to FALSE.

This often happens when I’m using it to play music. It’s also restarted when I’m trying to watch a video, read a web page or, once, when I was part way through setting up login details for a new bank account. I want to apply updates when it’s convenient for me, not when Firefox decides to update. So, how do I prevent my activities being interrupted by Firefox update? I appreciate that it’s important to keep it up to date but I’m not happy when my activities are interrupted because Firefox decides that it needs to update itself. I suppose one approach would be to apply updates every day when I start Firefox however; I often have a specific task in mind when I start it so I really don’t want the distraction of having to update first. Here’s what I’ve tried so far. None of these have stopped Firefox restarting itself: On the Settings page: Select “Check for updates but let you choose to install them” Disable “Use a background service to install updates” Since the above didn’t stop the Firefox restarts, I tried: Select “Automatically install updates (recommended)” with “When Firefox is not running” In 'about:config' : Set 'app.update.auto', to FALSE. Set ‘app.update.background.interval’ to 31536000 (i.e. 1 year) Set ‘app.update.interval’ to 31536000 (i.e. 1 year) Set 'app.update.auto.migrated' to FALSE. In Windows Registry Editor, set: [HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla\Firefox] "DisableAppUpdate"=dword:00000001 Used Win 10 to disable the “Mozilla Maintenance Service”: FF still restarts when I’m trying to use it. Also renamed the updater exe to: "C:\Program Files\Mozilla Firefox\updaterXXX.exe": auto update still runs (and installs a new updater.exe).