Did any other Browser besides FF have this issue?

Hi Felix Tha Kat, if we assume it's a "man in the middle" you may be able to identify it from the "Advanced" section of the error page.

Click the Advanced button, then look for an underlined error code such as SEC_ERROR_UNKNOWN_ISSUER and click that. Firefox should hopefully show a coded version of the certificate that doesn't check out. If you paste that block of gibberish here, a volunteer can decode it and check the issuer to see whether it identifies the culprit.

Or you can decode it yourself using a site like: https://certlogik.com/decoder/

Avast can be a tricky creature, as I understand it this is out of date and it is a different scanner than when this was made a few weeks ago :

• https://support.mozilla.org/en-US/kb/secure-connection-failed-error-message#w_avast-and-avg-security-products

Are you getting the error message on everything or just a particular site ...

You can not have all 3 going : Type: Avast Antivirus Type: Windows Firewall;ZoneAlarm Free Firewall Firewall

It is a conflict. Which Avast, just the AV or Firewall included..... Windows Firewall and Zone Alarm both is a no no....

Can have stuff bundled but they need to do things differently as Can Have Norton Security and Malwarebytes Pro together as do things differently.

A AV program is not much use really as that is not where attacks are aimed at any more. Malware and trickery.

Click on a link or go to a bad page.

Get rid of Avast unless you paid for it, Get rid of Zone Alarm Turn on Windows Defender, Leave Windows Firewall on. Then pick one or both as they are through the browser and : https://addons.mozilla.org/firefox/addon/norton-safe-web/ https://addons.mozilla.org/firefox/addon/malwarebytes/ or can keep adjusting search and come up with 5 more pages or so if not more : https://addons.mozilla.org/firefox/search/?platform=windows&q=Security https://addons.mozilla.org/firefox/search/?platform=windows&q=Securit

Provided they do not break Firefox and do not conflict against each other which you determine in their logs.

Once figure those out then try a fresh install with Full Version Installer : uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:\Program Files , C:\Program Files(x86) & C:\ProgramData Then restart system. Then run Windows Disk Cleanup. (Note: This should be Pinned and run Weekly, If never done below expect 10's of gig's) Then run it again and click the button that says Cleanup System Files. Note: your Firefox Profile is saved. But you should make a back up before you do :

• https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles
• https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer

Reinstall with Current Release Firefox 61.0.2 with a Full Version Installer

• https://www.mozilla.org/firefox/all/

Please let us know if this solved your issue or if need further assistance.

Sorry for taking so long to answer...

@WestEnd:

Hey! I am actually having serious connection problems in this OS. Both Chrome (x64 Beta) and Firefox are really weird... I'll attach a screenshot of what Chrome says to me. It's a little thing on bottom left that just takes way longer than it should. And when it finally loads the page, sometimes there are missing images, advertisement... It's not completely loaded.

What is even more weird, tho, is that I play BF4 online with good connection. I can also download torrents really fast... It seems like a Browser problem.

@jscher2000 and @Pkshadow

I'll ask you guys to be patient with me lol

Here is what is going on right now:

I am with Windows default firewall. Completely removed ZoneAlarm (didn't like it). I'll go back to Comodo soon. There is no way I'm going to run only Windows defender Firewall.

Protection wise I only have Avast installed. Restored all of its default configurations.

Uninstalled Firefox. I'll install it again now.

• Edit: the second image is actually from Chrome. I'll install Firefox now and do what you said @jscher2000 !

If your uninstalling do it this way and use the installer Link as noted : uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:\Program Files , C:\Program Files(x86) & C:\ProgramData Then restart system. Then run Windows Disk Cleanup. (Note: This should be Pinned and run Weekly, If never done below expect 10's of gig's) Then run it again and click the button that says Cleanup System Files. Note: your Firefox Profile is saved. But you should make a back up before you do :

• https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles
• https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer

Reinstall with Current Release Firefox 61.0.2 with a Full Version Installer

• https://www.mozilla.org/firefox/all/

Please let us know if this solved your issue or if need further assistance.

Since doing torrents please do a scan : https://www.malwarebytes.com/

@Pkshadow

Hey! I uninstalled Firefox yesterday using Revo Uninstaller Pro and deleted all of its traces. Also cleaned Recent, temp, %temp%, prefetch... Ran CCleaner, Revo and DiskCleanup to clean up Windows. Rebooted. Installed the new version of Firefox. Downloaded it from the link you gave me. At first it worked perfectly! I even uninstalled Chrome. Used it for about 40 min and went to sleep. Woke up today and the error is back :( I did not install any firewall nor anything. I only have Avast running on default

https://www.google.com/search?q=epic+browser&ie=utf-8&oe=utf-8&client=firefox-b-ab

Peer’s Certificate issuer is not recognized.

HTTP Strict Transport Security: true HTTP Public Key Pinning: true

Certificate chain:

MIIC1jCCAb6gAwIBAgIRAL8vFGptzGyVdpiV/P2m1YAwDQYJKoZIhvcNAQELBQAw JzELMAkGA1UEBhMCRU4xGDAWBgNVBAMMD0NvbUxlZ1NlcnZpY2UgMjAeFw0xODA4 MTQwNzQ4NDdaFw0xODEwMjMwNzM4MDBaMGgxCzAJBgNVBAYTAlVTMRMwEQYDVQQI DApDYWxpZm9ybmlhMRYwFAYDVQQHDA1Nb3VudGFpbiBWaWV3MRMwEQYDVQQKDApH b29nbGUgTExDMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTCBnzANBgkqhkiG9w0B AQEFAAOBjQAwgYkCgYEAue9fvFSDNBqHY/TpdJqX6dHmRluxuGEGNa9AI7kKcV6X ZFoLiO/etki/MNxt5AmrIJcjI5gZprTMXXKJJHBFbO90BvywBtK9yczyEZM8BRVL 3+UKY2SROPeoVCHgfGy5oQcE22QMSrqjFTA14WHaJftFOnQBtrxih4qtrQ4r0PUC AwEAAaNAMD4wGQYDVR0RBBIwEIIOd3d3Lmdvb2dsZS5jb20wDAYDVR0TAQH/BAIw ADATBgNVHSUEDDAKBggrBgEFBQcDATANBgkqhkiG9w0BAQsFAAOCAQEApwsVUrq8 8XC+KZrkUn/RwIl/eig2EJYy4mIfmiaEnUvL+3ssbEwlaULsTAb5tj+0XkaLRK3i hv3zjzoMt2md9btEY27xi3J7xsJeJyqCrZGI0N3LUU95XaEPOlVikozIYgmQlTv3 LkQfZ87R2hYlry+7iWyURCUoahIFbhDv/LVpctAnCarovWkqE9ESmiG91S2xVZhE IUptuYAGXM2+TedDk5ZEeI0z6erfyqojV9jcWMPNbaiJ1ih3ywOv5HF+2IeW+wiA /o9K5pDOjU/sgT3ppoEgsRY7UwRZvuzCjyuZaGw6t7Tc9IGTNVLq15n/zydOVe1z KDGz4gHDdHuyYQ==

The certificate issuer is listed as "ComLegService 2" which may be associated with Legendas, based on a little research I did earlier this year:

http://forums.mozillazine.org/viewtopic.php?f=38&t=3040727

Does that ring a bell??

@jscher2000

That's so interesting... How did you get that information out of the certificate? Using the decoder you mentioned?

I disabled the process from starting and rebooted my PC. Firefox is working now!

Very nice, man! Thank you!

The process that was messing all up is from this software: http://legendasbrasil.org/ Now when I search for a subtitle (manually start the software), the program is still working and does not mess my Firefox anymore... Living and learning.

Anyways, I'll install my beloved Comodo again and test Firefox. Here's a few pics:

• THANK YOU!!

Yes, the decoder has a row for "Issuer" which can be very helpful.

I don't know what that service is for. If you can't think of a good reason for their software to screen all of your web browsing, I definitely agree with turning that off.

• Currently posting this reply using Firefox!

I'm happy.

I am running Comodo Firewall and Avast. Also have Malwarebytes free. But I just run it once a week.

The problem was not my connection, nor my DNS, nor my Firewall, nor my AV.

That service is not going to run on PC ever again.

Thank you all very much! Especially @jscher2000 !