Firefox won't work with adguard enabled.

d0x

Member
I'm trying to switch to Firefox but if adguard is enabled I can't use completely default and fresh install of Firefox (v68)

I've attached a screenshot of the error. It basically is saying every websites security cert is invalid.

Am I missing something in the adguard settings that's Firefox specific?

Thanks
 

Attachments

Blaz

Moderator & Translator
Staff member
Moderator
Please try to manually install HTTPS certificate via AdGuard settings.
 

d0x

Member
I already did and it didn't work (but I tried again). The only thing I can think of is Samsung pushed an update out the other day that broke a couple apps but they were related to Knox security.
 

asdx5

New Member
I have the same issue since I installed firefox beta instead of firefox preview.
I installed the certificate in firefox on https filtering setting but it doesn't change anything.
 

Boo Berry

Moderator + Beta Tester
Moderator
Firefox Beta doesn't support third-party certificates, Mozilla hasn't added support for them yet. Any Firefox browsers based on Fenix (Firefox Preview, Firefox Focus, Firefox Beta, etc.) currently lacks support for third-party certificates.
 

asdx5

New Member
Firefox Preview was working fine, and also Firefox nightly, it's just the beta that doesn't work... Deactivating Adguard it's ok.
I just installed again FF Nightly and it works... I'll keep it, but Adguard should check the issue.
 

Boo Berry

Moderator + Beta Tester
Moderator
If you previously had a version of Firefox Preview installed that was pre-Fenix and you installed the certificate during this time, it gets carried over when Fenix was pushed out.

I suspect if you did a clean reinstall of Firefox Preview, it wouldn't work anymore.
 

asdx5

New Member
Firefox preview doesn't exist anymore. It's been automatically replaced by Firefox Nightly during one of the last updates. After installation, Firefox Nightly suggest to install Firefox Beta, and so I did (while uninstalling with normal procedure the Nightly).
Now I have both Nightly and Beta installed. I didn't install any certificate on purpose except for the Beta, yesterday. You say that Beta can't install certificates, but I didn't get any error messages.
What's a clean reinstall? It's maybe to clear cache and memory before uninstall? I just did it as a test and it doesn't change anything: Nightly works just fine with Adguard enabled.
 

asdx5

New Member
I just discovered that Nightly has HTTPS filtering disabled by default in Adguard settings, while in FF Beta was enabled. If you try to enable it appears a message saying that Nighlty won't trust user certificates. That is the reason for the different behaviour.
 

Boo Berry

Moderator + Beta Tester
Moderator
Yeah, Nightly/Beta doesn't allow third-party certificates yet, so it's to be expected.

A good way to check is to go to http://local.adguard.com/cert in Firefox Nightly/Beta and see if it lets you install the certificate. It *shouldn't* because they don't support third-party certificates yet.
 

BobbyPhoenix

New Member
Yeah, Nightly/Beta doesn't allow third-party certificates yet, so it's to be expected.

A good way to check is to go to http://local.adguard.com/cert in Firefox Nightly/Beta and see if it lets you install the certificate. It *shouldn't* because they don't support third-party certificates yet.
I've come across this issue also. I have stable installed (been for years), and it works fine. I have Preview/Nightly installed (since first Preview version was released), and it works fine. Installing beta doesn't work. Hopefully when stable gets updated to 79 (which will be soon (as in next update)), I'm hoping it still works.

Is there a way to get the beta working? What if someone installs a fresh version of the stable 79 version when that is the version based on Fenix (like on a new phone, or has to wipe current phone) that doesn't accept certs yet? I guess just not use Firefox?
 

asdx5

New Member
Watch my previous post: you need to disable HTTPS filtering for FF Beta.
Settings/Apps Management, tap FF Beta and disable HTTPS Filtering.
 

BobbyPhoenix

New Member
Watch my previous post: you need to disable HTTPS filtering for FF Beta.
Settings/Apps Management, tap FF Beta and disable HTTPS Filtering.
I looked in AdGuard HTTPS settings, but where do you turn it off just for Firefox?

Edit: Sorry I see you told me. Apps Management. Thank you!
 

_Marek_

New Member
Hello, don't use beta or nightly builds with adguard etc because like Boo Berry said befor, they don't support third-party certificates yet! If you want to use the newest version of firefox (79.0.2 ) with adguard app on andorid then first you have to download the old normal version of FF from the google play store, then install adguard cert etc after that you can update your firefox app to 79.0.2 stable ver ;) but you will need to download it from apkmirror com etc (do not remove the old version from your phone! just update it)
Then adguard should works perfectly fine with new ver of FF.

ps: stable ver was already rele but not on google play store



 

BobbyPhoenix

New Member
Watch my previous post: you need to disable HTTPS filtering for FF Beta.
Settings/Apps Management, tap FF Beta and disable HTTPS Filtering.
Something is still wrong. I have the Beta settings exactly like Nightly in App Settings (and Firefox settings for that matter), but I still can't connect. If I turn off AdGuard completely it works. I turned off HTTPS for Beta, cleared cache/storage, forced stopped, then started all over again, but it still won't connect if AdGuard is on even though HTTPS is off for Beta.
 

makertr

New Member
[QUOTE = "asdx5, post: 200753, membro: 22019"]
Assista ao meu post anterior: você precisa desativar a filtragem HTTPS para o FF Beta.
Configurações / Gerenciamento de aplicativos, toque em FF Beta e desative a Filtragem HTTPS.
[/CITAR]
verdade galera eu assisti e deu certo, olhem lá.
 

Dr. Craven

New Member
...If you want to use the newest version of firefox (79.0.2 ) with adguard app on andorid then first you have to download the old normal version of FF from the google play store, then install adguard cert etc after that you can update your firefox app to 79.0.2 stable ver ;) but you will need to download it from apkmirror com etc (do not remove the old version from your phone! just update it)
Then adguard should works perfectly fine with new ver of FF.
It actually works as described. Thank you! :)
 

tico

New Member
Thanks for your posts.
Now that the new version of Firefox is deploy everywhere, upgrade from an old version is really necessary.
There may be a lot of questions on this subject. On my side i wanted to test this new version and I was stuck.
 
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ppp

Beta Tester
how do I download the "old normal version" from play store?

I just got a new phone, and FF doesn't seem to load anything https even after trying to reinstall cert.
 

Boo Berry

Moderator + Beta Tester
Moderator
You can't download it from the Play Store. You have to use a site like apkmirror to find and download an older Firefox version and manually install the APK file.
 
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