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Proxy settings will not save in program or through prefs.js.

  • 5 replies
  • 165 have this problem
  • 101 views
  • Last reply by paronigor

Every time I start up firefox 4 RC1, the proxy settings are set to manual configuration. I have no proxy and have to set it to no proxy every time. When I close and re-open, it goes back to manual configuration. I tried manually editing this setting through prefs,js and it saves until I open firefox again and it resets it to manual proxy configuration. I also tried deleting prefs.js so it would generate a new one but still no luck.

Every time I start up firefox 4 RC1, the proxy settings are set to manual configuration. I have no proxy and have to set it to no proxy every time. When I close and re-open, it goes back to manual configuration. I tried manually editing this setting through prefs,js and it saves until I open firefox again and it resets it to manual proxy configuration. I also tried deleting prefs.js so it would generate a new one but still no luck.

Chosen solution

I also have this problem except it occurs in the final LTS 4.0.

In my case, this issue had to do with incompatibilities of add-ons and extensions with Firefox 4.0.

To troubleshoot this issue: Begin by disabling all add-ons/extensions in Firefox. Your proxy settings should now be able to save. Now enable them one by one and you'll quickly find which one is causing the problem.

Hope this helps anyone having this issue!

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All Replies (5)

Chosen Solution

I also have this problem except it occurs in the final LTS 4.0.

In my case, this issue had to do with incompatibilities of add-ons and extensions with Firefox 4.0.

To troubleshoot this issue: Begin by disabling all add-ons/extensions in Firefox. Your proxy settings should now be able to save. Now enable them one by one and you'll quickly find which one is causing the problem.

Hope this helps anyone having this issue!

Modified by Hippie

Yes I found this out just earlier today. It ended up being a problem with the Password Exporter addon. As soon as I disabled it the problem went away.

Every time I start up Firefox 4 the proxy settings are set to manual configuration. I have no proxy and have to set it to no proxy every time. When I close and re-open, it goes back to manual configuration. I tried manually editing this setting and it saves until I open Firefox again and it resets it to manual proxy configuration. My lap top, with the same server, works like a champ with Firefox 4 and has given me no trouble.

Modified by daleru67@yahoo.com

My issue with the manual proxy setting that doesn't go away on restart, started immediately upon installing FireFox 4 from 3.6 on Win XP sp3. After disabling groups of Add-ons, and then enabling some, it seems that my problem was with "PDF Download". I had it disabled, didn't have the proxy go back to manual, so now it is removed. I may try re-installing it another time.

I had a Malware problem, maybe it is the same for you.

I looked for files modified at the time I thought the Malware acted on my PC.

Found 3 lines added to the:

C:/users/xxxxxmyprofile/appdata/roaming/mozilla/firefox/profiles/xxxxx.default/extensionsfoxmarks@kei.com/default/preferences/prefs.js

I removed them, and I saved the prefs.js file again. They were like: user_pref("network.proxy.http", "127.0.0.1"); user_pref("network.proxy.http_port", 58505); user_pref("network.proxy.type", 1); More or less.

My suggestions: Check all *.js files in firefox/ subfolders, plugins included (in my case, as you can see, it was in foxmarks subfolder).

Took me a while, finally solved.