Join the Mozilla’s Test Days event from Dec 2–8 to test the new Firefox address bar on Firefox Beta 134 and get a chance to win Mozilla swag vouchers! 🎁

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

I cannot install addons

  • 10 replies
  • 1 has this problem
  • 28 views
  • Last reply by FredMcD

more options

hello! I click on addons to install the addons download but after completion of downloading, there is no dialog box to ask me to install or something nothing happens the addons don't install what can I do? thanks!

hello! I click on addons to install the addons download but after completion of downloading, there is no dialog box to ask me to install or something nothing happens the addons don't install what can I do? thanks!

All Replies (10)

more options

Hey firefoxuse

When you have downloaded an addon it pops up to ask if you trust the addon, if you download a few it might have just assumed you trust it. Go to your addon manager and look at extensions and see if its there

Hope this helped Brad

more options

Bradforth said

Hey firefoxuse When you have downloaded an addon it pops up to ask if you trust the addon, if you download a few it might have just assumed you trust it. Go to your addon manager and look at extensions and see if its there Hope this helped Brad

no, unfortunately it is not in the addon list

more options

hey.. all the addons available doesn't work on firefox on android while they on desktop.

you may refer here so that you can get your problem resolve

https://addons.mozilla.org/en-us/faq

more options

kushagra said

hey.. all the addons available doesn't work on firefox on android while they on desktop. you may refer here so that you can get your problem resolve https://addons.mozilla.org/en-us/faq

who mentioned android here? what does android have to do with this?

more options
more options

finitarry said

http://kb.mozillazine.org/Unable_to_install_themes_or_extensions_-_Firefox

this refers to ancient firefox versions

as for what still applies, it displays an error message

in my case, there is no error message!

more options

by the way, I run Firefox Portable

what is the diagnostic procedure to find what's wrong?

more options

firefoxuse said

by the way, I run Firefox Portable

You should have said that in the first place.

what is the diagnostic procedure to find what's wrong?

Much the same, but remember one important thing; Firefox Portable is not made by Mozilla.

See if this link can help. If not, contact Firefox Portable support.

http://kb.mozillazine.org/Unable_to_install_themes_or_extensions_-_Firefox#Unexpected_installation_error_-203

more options

FredMcD said

firefoxuse said
by the way, I run Firefox Portable

You should have said that in the first place.

what is the diagnostic procedure to find what's wrong?

Much the same, but remember one important thing; Firefox Portable is not made by Mozilla.

See if this link can help. If not, contact Firefox Portable support.

http://kb.mozillazine.org/Unable_to_install_themes_or_extensions_-_Firefox#Unexpected_installation_error_-203

Fred, are the instructions to perform the 'new-profile check' the same for portable firefox? or they are different? is the way to create a new profile the same?

more options