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!

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

whenever i want to install adblock plus its shows an error message as " because: Signing could not be verified. -260"

  • 2 replies
  • 24 have this problem
  • 5 views
  • Last reply by max075

more options

WHENEVER I WANT TO INSTALL ADBLOCK PLUS IT SHOWS AN ERROR MESSAGE "because: Signing could not be verified. -260"

WHENEVER I WANT TO INSTALL ADBLOCK PLUS IT SHOWS AN ERROR MESSAGE "because: Signing could not be verified. -260"

All Replies (2)

more options

Why are you still using that old 3.5b4 version of Firefox?

The latest versions of Adblock Plus need 3.5 or higher - 3.5b4 may not be compatible.

more options

the ad-blocking extension "Adblock Plus" is now available for Google Chrome and can be downloaded from "https://chrome.google.com/extensions/detail/cfhdojbkjhnklbpkdaibdccddilifddb maybe will help you , you will find info on that site