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

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 cannot install an addon from your repositiry

  • 2 replies
  • 2 have this problem
  • 1 view
  • Last reply by cor-el

jcrear
jcrear
more options

I am trying to install the lastpass extension from your repository but I get an error message: "The add-on could not be installed because it does not match the add-on Firefox expected."

I have tried several solutions available online with no success. It is version 52.2.1 and the add-on does say it's supported. Also I am not able to update it as this version we require to run silverlight.

Please could you assist in getting it working?

I am trying to install the lastpass extension from your repository but I get an error message: "The add-on could not be installed because it does not match the add-on Firefox expected." I have tried several solutions available online with no success. It is version 52.2.1 and the add-on does say it's supported. Also I am not able to update it as this version we require to run silverlight. Please could you assist in getting it working?

All Replies (2)

Shadow110
Shadow110
more options

Have you tried https://www.lastpass.com/ and click the Get It Free Button ? or you could post in their forum for support https://forums.lastpass.com/

Yup their support page has your answer : https://lastpass.com/support.php?cmd=showfaq&id=8986

Silverlight is a security risk and is depreciated.

Please let us know if this solved your issue or if need further assistance.

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

It is possible that security software (anti-virus, firewall) is causing the problem. Try to disable security software temporarily to see if that makes a difference.