This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

Can't install themes

  • 3 replies
  • 1 has this problem
  • 36 views
  • Paskiausią atsakymą parašė Pj

more options

Today my favourite theme has been taken away and I can't install any other theme. I'm having trouble using Firefox now as the colours are all wrong and I can't see then very easily. Whatever theme I select and try to install I get an error message saying Forefox can't donwload it and check my internet connection. I've rebooted Firefox and I've rebooted the computer but nothing makes any difference. it's horrible try to use the browser like this.

Today my favourite theme has been taken away and I can't install any other theme. I'm having trouble using Firefox now as the colours are all wrong and I can't see then very easily. Whatever theme I select and try to install I get an error message saying Forefox can't donwload it and check my internet connection. I've rebooted Firefox and I've rebooted the computer but nothing makes any difference. it's horrible try to use the browser like this.

Chosen solution

mrsyardbroom said

There was a Bug-A-Boo with a Certificate Expiration Date dealing with the Add-ons. There's a new FF Version with the main Fix, 66.0.4.

Mozilla Blog Post Update:
A Firefox release has been pushed — version 66.0.4 on Desktop and Android, and version 60.6.2 for ESR. This release repairs the certificate chain to re-enable web extensions, themes, search engines, and language packs that had been disabled (Bug 1549061).
There are remaining issues that we are actively working to resolve, but we wanted to get this fix out before Monday to lessen the impact of disabled add-ons before the start of the week. More information about the remaining issues can be found by clicking on the links to the release notes above.
(May 5, 16:25 EDT)


~Pj

Skaityti atsakymą kartu su kontekstu 👍 0

All Replies (3)

more options

hi, this is/was caused by an unforeseen technical problem unfortunately (an expired certificate used in the process of verifying addon signatures).

a fix for this is already being rolled out - for details, please see: Add-ons disabled or fail to install on Firefox

more options

Chosen Solution

mrsyardbroom said

There was a Bug-A-Boo with a Certificate Expiration Date dealing with the Add-ons. There's a new FF Version with the main Fix, 66.0.4.

Mozilla Blog Post Update:
A Firefox release has been pushed — version 66.0.4 on Desktop and Android, and version 60.6.2 for ESR. This release repairs the certificate chain to re-enable web extensions, themes, search engines, and language packs that had been disabled (Bug 1549061).
There are remaining issues that we are actively working to resolve, but we wanted to get this fix out before Monday to lessen the impact of disabled add-ons before the start of the week. More information about the remaining issues can be found by clicking on the links to the release notes above.
(May 5, 16:25 EDT)


~Pj