Recently in our workplace, we had several computers that suddenly stopped being able to access several websites, the issue started shortly after pushing a updated Firefox across the floor. I tracked the issue down to being related to security.tls.version.fallback-limit defaulting to 4, instead of the old 3. Setting the value to 3 resolves the website accessibility issue. A.) How can I confirm if this is a recent change or not? Everything I read seems to indicate the default should already be 3, but its very definitively not. B.) What is the best way to push a pref adjustment change across the floor if the option isn't present in the registry and isn't a GPO option? Is my only option really to make some script that scans every computer's users folder, check every user folder's appdata\mozilla, scan every profile for a pref.js file, and do a string search for a reference line and then do a line addition if a certain string doesn't exist? I ''can ''do this, it just doesn't seem like a good long term fix as I would have to run this script regularly as users come and go.... I am on FF 128.7.0esr (64-bit) under a new profile.