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Since upgrading, I get a Javascript Error popup on every site I try to visit.

  • 3 回覆
  • 12 有這個問題
  • 1 次檢視
  • 最近回覆由 Will Norris

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Since upgrading to Firefox 17.0.1, many webpages spawn a popup ( or several popups) with a very vague error message: [Javascript Application] Error: Syntax Error . It makes using the browser kind of impossible. Any ideas?

Since upgrading to Firefox 17.0.1, many webpages spawn a popup ( or several popups) with a very vague error message: [Javascript Application] Error: Syntax Error . It makes using the browser kind of impossible. Any ideas?

被選擇的解決方法

The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information. Note: This will cause you to lose any Extensions, Open websites, and some Preferences.

To Reset Firefox do the following:

  1. Go to Firefox > Help > Troubleshooting Information.
  2. Click the "Reset Firefox" button.
  3. Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
  4. Firefox will open with all factory defaults applied.


Further information can be found in the Refresh Firefox - reset add-ons and settings article.

Did this fix your problems? Please report back to us!

從原來的回覆中察看解決方案 👍 2

所有回覆 (3)

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選擇的解決方法

The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information. Note: This will cause you to lose any Extensions, Open websites, and some Preferences.

To Reset Firefox do the following:

  1. Go to Firefox > Help > Troubleshooting Information.
  2. Click the "Reset Firefox" button.
  3. Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
  4. Firefox will open with all factory defaults applied.


Further information can be found in the Refresh Firefox - reset add-ons and settings article.

Did this fix your problems? Please report back to us!

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The Social Fixer extension has been reported to cause this issue.

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Social Fixer disabled and now the world is spinning again in greased groove. No need to reset FF