Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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.

Avatar for Username

Etsi tuesta

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.

Learn More

Ketju on arkistoitu. Esitä kysymys, jos tarvitset apua.

Download problem: "Firefox could not install the file at https://addons.mozilla.org/en-US/firefox/downloads/latest/2462/addon-2462-latest.xpi?src=addondetail because: Invalid file hash (possible download corruption) -261"; plus incompatibility issues.

  • 1 vastaus
  • 47 henkilöllä on sama ongelma
  • 1 näyttö
  • Viimeisin kirjoittaja cor-el

TC
TC
more options

When attempting to install the "TryAgain" add-on (https://addons.mozilla.org/en-US/firefox/addon/2462/) I receive the error message "Firefox could not install the file at https://addons.mozilla.org/en-US/firefox/downloads/latest/2462/addon-2462-latest.xpi?src=addondetail because: Invalid file hash (possible download corruption) -261."

In an attempt to resolve the problem, I followed the instructions for "Unable to install add-ons" in the support Knowledge Base, specifically the section titled "Corrupt extension files" (https://support.mozilla.com/sq/kb/Unable+to+install+add-ons#Corrupt_extension_files).

After restarting the browser as directed, the add-on ("TryAgain") was still unable to be downloaded. Also, when I checked my currently installed add-ons, I found that some were now "Not compatible with Firefox 3.6.8" - they had worked before deleting the files and restarting the browser, and their download pages currently show the add-ons as being compatible with my version of Firefox.

When attempting to install the "TryAgain" add-on (https://addons.mozilla.org/en-US/firefox/addon/2462/) I receive the error message "Firefox could not install the file at https://addons.mozilla.org/en-US/firefox/downloads/latest/2462/addon-2462-latest.xpi?src=addondetail because: Invalid file hash (possible download corruption) -261." In an attempt to resolve the problem, I followed the instructions for "Unable to install add-ons" in the support Knowledge Base, specifically the section titled "Corrupt extension files" (https://support.mozilla.com/sq/kb/Unable+to+install+add-ons#Corrupt_extension_files). After restarting the browser as directed, the add-on ("TryAgain") was still unable to be downloaded. Also, when I checked my currently installed add-ons, I found that some were now "Not compatible with Firefox 3.6.8" - they had worked before deleting the files and restarting the browser, and their download pages currently show the add-ons as being compatible with my version of Firefox.

Kaikki vastaukset (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

If you see disabled extensions that are not compatible on the next start in "Tools > Add-ons > Extensions" then click the "Find Updates" button to do a compatibility check.

You may need to enable third-party cookies temporarily. See Third-party cookies and Firefox tracking protection
Also make sure that security software isn't blocking that download (it's a ZIP archive).