Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Rohkem teavet

Problem install/update add-ons. https://addons.mozilla.org/firefox/downloads/latest/7560/addon-7560-latest.xpi?src=api p.g.a.: Ogiltig filhash (möjligen en skadad filhämtning) -261

  • 3 vastust
  • 23 on selline probleem
  • 1 view
  • Viimati vastas cor-el

more options

Problem install/update add-ons. https://addons.mozilla.org/firefox/downloads/latest/7560/addon-7560-latest.xpi?src=api p.g.a.: Ogiltig filhash (möjligen en skadad filhämtning) -261

Problem install/update add-ons. https://addons.mozilla.org/firefox/downloads/latest/7560/addon-7560-latest.xpi?src=api p.g.a.: Ogiltig filhash (möjligen en skadad filhämtning) -261

All Replies (3)

more options

If Firefox gave you the following error message: Firefox could not install the file at https://addons.mozilla.org/******.xpi because:
Invalid file hash (possible download corruption) -261

This error message may be caused when Firefox is set disallow third party cookies. To accept the third party cookies: go to Tools -> Options -> Privacy -> tick 'Accept third party cookies'.

more options

Thanks for answer. I am running Firefox on Mac (apple). How do I accept cookies from "third party" in Firefox for Mac?

more options