Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Buscar en Ayuda

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Since W10 came out, Firefox seems to have been sabotaged.

more options

Since W10 came out, Firefox seems to have been "purposely" sabotaged.

I repeatedly get asked to change my default browser off firefox, despite it being long set in place as such. It's running much slower, with many more errors. I now get seemingly continuous Screen updates, make doing emails nearly impossible as the screen freezes while it "thinks". I now get continued "(firefox not responding)" error messages.

Hope you can do some work-arounds. D

Since W10 came out, Firefox seems to have been "purposely" sabotaged. I repeatedly get asked to change my default browser off firefox, despite it being long set in place as such. It's running much slower, with many more errors. I now get seemingly continuous Screen updates, make doing emails nearly impossible as the screen freezes while it "thinks". I now get continued "(firefox not responding)" error messages. Hope you can do some work-arounds. D

Solución elegida

Firefox 40, scheduled to be released next week, will have numerous compatibility fixes for Windows 10. Hopefully that will address many of the issues you are facing.

Since you seems to be an "early adopter" type person, do you want to try Firefox 40 in its final days of testing?

Note: Some extensions may not be compatible with Firefox 40, especially security suite toolbars that tend to upgrade simultaneously with or shortly after Firefox releases.

The following process will not remove your settings; do NOT uninstall Firefox, that's not needed.

(A) Download a full installer for Firefox 40 "beta" from https://www.mozilla.org/firefox/beta/all/ to a convenient location. (Scroll down to your preferred language.)

Note: to retain use of your installed plugins, I suggest the 32-bit version.

(B) Exit out of Firefox (if applicable).

(C) Rename the program folder, either:

(64-bit Windows folder names)

C:\Program Files (x86)\Mozilla Firefox

to

C:\Program Files (x86)\OldFirefox

(32-bit Windows folder names)

C:\Program Files\Mozilla Firefox

to

C:\Program Files\OldFirefox

(D) Run the installer you downloaded in #1. It should automatically connect to your existing settings.

Any improvement after this install?

Note: Some plugins may exist only in that OldFirefox folder. If something essential is missing, look in these folders:

  • \OldFirefox\Plugins
  • \OldFirefox\browser\plugins

When the release version of Firefox 40 becomes available (estimated August 11th), I suggest installing that one because beta will auto-update to Firefox 41 shortly thereafter and unless you like testing software, that might be a little more adventure than you're looking for.

Leer esta respuesta en su contexto 👍 1

Todas las respuestas (1)

more options

Solución elegida

Firefox 40, scheduled to be released next week, will have numerous compatibility fixes for Windows 10. Hopefully that will address many of the issues you are facing.

Since you seems to be an "early adopter" type person, do you want to try Firefox 40 in its final days of testing?

Note: Some extensions may not be compatible with Firefox 40, especially security suite toolbars that tend to upgrade simultaneously with or shortly after Firefox releases.

The following process will not remove your settings; do NOT uninstall Firefox, that's not needed.

(A) Download a full installer for Firefox 40 "beta" from https://www.mozilla.org/firefox/beta/all/ to a convenient location. (Scroll down to your preferred language.)

Note: to retain use of your installed plugins, I suggest the 32-bit version.

(B) Exit out of Firefox (if applicable).

(C) Rename the program folder, either:

(64-bit Windows folder names)

C:\Program Files (x86)\Mozilla Firefox

to

C:\Program Files (x86)\OldFirefox

(32-bit Windows folder names)

C:\Program Files\Mozilla Firefox

to

C:\Program Files\OldFirefox

(D) Run the installer you downloaded in #1. It should automatically connect to your existing settings.

Any improvement after this install?

Note: Some plugins may exist only in that OldFirefox folder. If something essential is missing, look in these folders:

  • \OldFirefox\Plugins
  • \OldFirefox\browser\plugins

When the release version of Firefox 40 becomes available (estimated August 11th), I suggest installing that one because beta will auto-update to Firefox 41 shortly thereafter and unless you like testing software, that might be a little more adventure than you're looking for.