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

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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

Chosen solution

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.

Read this answer in context 1

Additional System Details

Installed Plug-ins

  • Adobe PDF Plug-In For Firefox and Netscape 15.8.20082
  • Google Update
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Shockwave Flash 18.0 r0
  • Adobe Shockwave for Director Netscape plug-in, version 12.1.8.158
  • 5.1.40416.0

Application

  • User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:39.0) Gecko/20100101 Firefox/39.0

More Information

jscher2000
  • Top 10 Contributor
8758 solutions 71655 answers

Chosen Solution

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.

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.