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can´t update my extensions

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I can't update my extensions in firefox. I get this message everytime (doesn't matter wich extension): "Firefox kan inte installera filen på https://addons.mozilla.org/_files/3590/fast_video_download_with_searchmenu-4.0.1-fx.xpi p.g.a.: Ogiltig filhash (möjligen en skadad filhämtning) -261" - which means something like Firefox can't install the file at :xxxxx.xpi because of ....... -261.


Please help me!

I can't update my extensions in firefox. I get this message everytime (doesn't matter wich extension): "Firefox kan inte installera filen på https://addons.mozilla.org/_files/3590/fast_video_download_with_searchmenu-4.0.1-fx.xpi p.g.a.: Ogiltig filhash (möjligen en skadad filhämtning) -261" - which means something like Firefox can't install the file at :xxxxx.xpi because of ....... -261. Please help me!

All Replies (2)

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This can happen if third-party cookies are blocked.

  1. In the Tools menu select Options to open the options window
  2. Select the Privacy panel.
  3. Check mark Accept third-party cookies.
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Thx, but that's already checked....

I don't understand the problem....??? I can install/update through the webadresses, but not with the normal update box built in firefox...?? Why?

Modified by Need help, please!