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Since I updated Firefox yesterday I constantly get a popup about JavaScript that say uninstall, how do I stop that?

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mochaspal
mochaspal
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In the blue bar on the top of the popup it says: 

           JavaScript Application

In the box it says: 

           Uninstall Set
In the blue bar on the top of the popup it says: JavaScript Application In the box it says: Uninstall Set

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cor-el
cor-el
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This issue can be caused by an extension that isn't working properly.

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

If it does work in Safe-mode then disable all extensions and then try to find which is causing it by enabling one at a time until the problem reappears.

  • Use "Disable all add-ons" on the Safe mode start window to disable all extensions.
  • Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")