AdGuard + Comodo IceDragon Certificate Error

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Administrator
Staff member
Administrator
Do you mean that you've got invalid certificate using extension, not windows version?
 

Boo Berry

Moderator + Beta Tester
Moderator
Well, Firefox and its forks are pretty stubborn with certificates sometimes. Usually you can close the browser(s), disable filtering for 30 seconds then re-enable filtering and it should automatically inject the certificate or you can reboot. But, I've noticed this isn't the case with certain Firefox forks, mainly K-Meleon, where no matter what you do Adguard can't automatically inject the certificate thus requiring the user to manually import it instead. Hopefully IceDragon isn't another one of those troublesome forks.
 
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Administrator
Staff member
Administrator
Windows Version. Why does Firefox have certificate and Comodo doesn't? I enabled certificate and everything works! Thanks @nameless!
This problem could be caused by the way how we import our certificate into Firefox and other Firefox-based browsers.

Look, Firefox stores all root CA certificates in your user profile (usually it's placed somewhere in %appdata%\Mozilla folder).
So Adguard looks for the certificates db here named cert8.db.

But here is the very important notice: Firefox (or any Firefox-based browser) must not work when we import certificate there.
If it was running it just ignores imported cert (and re-writes cert db on exit).

So, what could have caused your issue:
1. Cert db location -- we scan %appdata% only. IceDragon could have placed it somewhere else.
2. If IceDragon was running when you installed Adguard cert import could fail.
 
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