Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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

Digital signatures Firefox

  • 25 replies
  • 3 have this problem
  • 269 views
  • Last reply by www.lr.kr

Hello, I am from Ukraine and I use a translator, sorry for that. I have poor physical and mental health. I have Windows XP and there is no possibility to buy a newer computer. Yesterday all my browser extensions were disabled. They are very important to me. I accept and understand all the risks. I beg you, please let me use these extensions. Please help...

Hello, I am from Ukraine and I use a translator, sorry for that. I have poor physical and mental health. I have Windows XP and there is no possibility to buy a newer computer. Yesterday all my browser extensions were disabled. They are very important to me. I accept and understand all the risks. I beg you, please let me use these extensions. Please help...

All Replies (5)

But it says "Certificate verification failed - the issuing party is unknown."

www.lr.kr said

But it says "Certificate verification failed - the issuing party is unknown."

Sorry, I didn't notice that. That probably means another certificate is missing from Firefox 50.

But which one? And how does it all work/connect?

I'm sorry, it's not possible for me to investigate Firefox 50 in detail because the source code is no longer online and I am not willing to install it on my computer.

I feel outdated and without a chance for a peaceful existence, just like my PC and browser...

Modified by www.lr.kr

  1. 1
  2. 2