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

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

Firefox could not install the file at https://addons.mozilla.org/firefox/downloads/latest/201/addon-201-latest.xpi?src=creatured because: Unexpected installation error Review the Error Console log for more details. -203

  • 1 reply
  • 44 have this problem
  • 6 views
  • Last reply by cor-el

renedohan
renedohan
more options

I cant download any video download manager always get this error ,actually for all adds ,i run late Firefox ,before i had no problem so after i try to download i get this message :

Firefox could not install the file at

https://addons.mozilla.org/firefox/downloads/latest/201/addon-201-latest.xpi?src=creatured

because: Unexpected installation error Review the Error Console log for more details. -203

I cant download any video download manager always get this error ,actually for all adds ,i run late Firefox ,before i had no problem so after i try to download i get this message : :Firefox could not install the file at https://addons.mozilla.org/firefox/downloads/latest/201/addon-201-latest.xpi?src=creatured because: Unexpected installation error Review the Error Console log for more details. -203

All Replies (1)

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

See: