When I try to ad the following, this answer always comes up:oes not work. Same answer: Firefox could not install the file at https://addons.mozilla.org/en-US/firefox/downloads/latest/1865/addon-1865-latest.xpi?src=addondetail because: Unexpected install
When I try to ad the following the answer is always:
Firefox could not install the file at
https://addons.mozilla.org/en-US/firefox/downloads/latest/1865/addon-1865-latest.xpi?src=addondetail
because: Unexpected installation error Review the Error Console log for more details. -203
This happened
Every time Firefox opened
When I try to ad the following the answer is always:
Firefox could not install the file at
https://addons.mozilla.org/en-US/firefox/downloads/latest/1865/addon-1865-latest.xpi?src=addondetail
because: Unexpected installation error
Review the Error Console log for more details.
-203
== This happened ==
Every time Firefox opened
All Replies (1)
The answer is in the first thread you started - locking this as a duplicate. https://support.mozilla.com/en-US/forum/1/668996?