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Extensions and add-ons all of a sudden does not work

AnonymousUser

The add-ons I have been utilizing is no longer available and all of a sudden is not working and is disabled no matter if I tried it again. Have no idea why all this is happening. I had Similar Sites toolbar, Skype, Adblock Plus, Cooliris, etc.

This happened

Every time Firefox opened

== All of a sudden and no longer is active

The add-ons I have been utilizing is no longer available and all of a sudden is not working and is disabled no matter if I tried it again. Have no idea why all this is happening. I had Similar Sites toolbar, Skype, Adblock Plus, Cooliris, etc. == This happened == Every time Firefox opened == All of a sudden and no longer is active

Alla svar (2)

Hello Axel.

If you provide more detail about your problem, that would be perfect. Also, please go into Help > Troubleshooting Information... (alternatively, access about:support in your location bar) and click "Copy all to clipboard". Then paste here. Hopefully that will give me a bit more information to work with.

In any case, hopefully this support article is what you need:

https://support.mozilla.com/en-US/kb/Unexpected+installation+error+-203+when+installing+add-ons

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