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!

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

Hierdie gesprek is in die argief. Vra asseblief 'n nuwe vraag as jy hulp nodig het.

it wont let me add new add-ons llike stumbleupon or firefox sync it give me an error what is wrong?

  • 1 antwoord
  • 6 hierdie probleem
  • 12 views
  • Laaste antwoord deur TonyE

tomkat9
tomkat9
more options

every time i try to add a new add-on i get an error saying firefox could not install the file at url. because: unexpected installation error review the error console log for more details. -203. it does this with any add on i try to add.

every time i try to add a new add-on i get an error saying firefox could not install the file at url. because: unexpected installation error review the error console log for more details. -203. it does this with any add on i try to add.

All Replies (1)

TonyE
TonyE
  • Moderator
more options

See Unexpected installation error -203 when installing add-ons