Avatar for Username

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.

Learn More

This thread was archived. Please ask a new question if you need help.

I always get the following error msg when trying to update add-ons "Invalid file hash (possible download corruption) -261"

  • 2 replies
  • 7 have this problem
  • 8 views
  • Last reply by hamlet02

hamlet02
hamlet02
more options

I get the following error msg when I try to update add-ons ...

ErrorFirefox could not install the file at

http://releases.mozilla.org/pub/mozilla.org/addons/1865/adblock_plus-1.2.2-fx+sm+tb+fn.xpi

because: Invalid file hash (possible download corruption) -261

Why, and is there a solution. Im fully patched on osx. + Fredrik

I get the following error msg when I try to update add-ons ... ErrorFirefox could not install the file at http://releases.mozilla.org/pub/mozilla.org/addons/1865/adblock_plus-1.2.2-fx+sm+tb+fn.xpi because: Invalid file hash (possible download corruption) -261 Why, and is there a solution. Im fully patched on osx. + Fredrik

All Replies (2)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options
  • "Clear the Cache": Firefox > Preferences > Advanced > Network > Offline Storage (Cache): "Clear Now"
  • "Remove the Cookies" from sites causing problems: Firefox > Preferences > Privacy > Cookies: "Show Cookies"

You can also try to enable third-party cookies
Firefox > Preferences > Privacy > Cookies: [X] "Accept third-party cookies"

See Third-party cookies and Firefox tracking protection (you need to enable)

hamlet02
hamlet02 Question owner
more options

Hi, that didnt change anything. Still the same error.