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

Denne tråden ble arkivert. Still et nytt spørsmål dersom du trenger hjelp.

unable to install add on

  • 3 svar
  • 1 har dette problemet
  • 1 view
  • Siste svar av Etienne

Etienne
Etienne
more options

I had to reinstall my antivirus (Gdata), since this all my add ons are not working. I tried to reinstall, but did not help. Then I reinstalled firefox completely, but now I can not install any add on (lastpass, ghostery, belgium eid). Or I get the message : add on is corrupt. Or I get the message: no connection When I swith off Gdata, also then I can't install add on. Win 10 - Firefox 66.0.3 (64-bits

I had to reinstall my antivirus (Gdata), since this all my add ons are not working. I tried to reinstall, but did not help. Then I reinstalled firefox completely, but now I can not install any add on (lastpass, ghostery, belgium eid). Or I get the message : add on is corrupt. Or I get the message: no connection When I swith off Gdata, also then I can't install add on. Win 10 - Firefox 66.0.3 (64-bits

Valgt løsning

This Add-on problem seems to be on all 52...66 Firefox versions. You can not install any Add on from web, and not even from your own hard disk.

I found a stupid, old-time work-around to this problem, but at it works and solves this immediately.

Turn your computer clock backwards some days, like May 1 2019 or something.

Then you can immediately re-install all your add-ons again. After I turned the clock back to original Date, the Add-ons still remain and are working.

I have to do some more testing, if the problem will come back. I just wanted to share my findings this far.

Les dette svaret i sammenhengen 👍 0

All Replies (3)

philipp
philipp
  • Moderator
more options

hi EP1952, please see the banner at the top of the support page - unfortunately there's a technical issue (an expired certificate used for addon verifications) today.

mozilla is already rolling out a hotfix for this problem, using the studies system. you can check if you have studies enabled:

  1. Go to [=] > Options > Privacy & Security.
  2. Make sure Allow Firefox to install and run studies is check marked.

if you had the preference disabled, reenable it temporarily and restart the browser. after your add-ons have been re-enabled you can disable the setting again.

jokke20
jokke20
more options

Valgt løsning

This Add-on problem seems to be on all 52...66 Firefox versions. You can not install any Add on from web, and not even from your own hard disk.

I found a stupid, old-time work-around to this problem, but at it works and solves this immediately.

Turn your computer clock backwards some days, like May 1 2019 or something.

Then you can immediately re-install all your add-ons again. After I turned the clock back to original Date, the Add-ons still remain and are working.

I have to do some more testing, if the problem will come back. I just wanted to share my findings this far.

Etienne
Etienne Eieren av spørsmålet
more options

I do not know how, but suddenly all add ons are working again.