Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

Firefox is blocking legitimate websites, including its own support page.

WhoisdoubleA
WhoisdoubleA
more options

I use Firefox almost strictly for my online school activity. I changed no security settings. I believe Firefox upgraded automatically. Then it wouldn't open my legitimate school pages due to security issues. When I tried to go to Firefox help, I got the same screen, which I have uploaded to illustrate. Sorry, I can't add troubleshooting information due to the fact that Firefox won't let me into that either, so I am using Safari.

I use Firefox almost strictly for my online school activity. I changed no security settings. I believe Firefox upgraded automatically. Then it wouldn't open my legitimate school pages due to security issues. When I tried to go to Firefox help, I got the same screen, which I have uploaded to illustrate. Sorry, I can't add troubleshooting information due to the fact that Firefox won't let me into that either, so I am using Safari.

Chosen solution

The issuer of this cert is: Avast trusted CA, AVAST

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

Read this answer in context 👍 0

All Replies (7)

WhoisdoubleA
WhoisdoubleA Question owner
more options

I see that my image didn't upload. Here it is.

philipp
philipp
  • Moderator
more options

hi, first please make sure that the date, time & timezone are set correctly on your system. if this doesn't solve the issue (or it is already set properly), a solution depends on the individual circumstances:

  • what is the error code shown when you click on advanced on that error page?
  • please also give us more information about the error by clicking on the error code, copying the text to the clipboard and then pasting it here into a reply in the forum like shown in the screenshot.

thank you!

WhoisdoubleA
WhoisdoubleA Question owner
more options

There is no error code. This is what it says when I click on Advanced: SEC_ISSUER_UNKNOWN_ISSUER

For some reason, it will not let me copy the result. I am sending in a screenshot.

BTW I turned off the security and it still doesn't work. I would never operate without it, normally.

TyDraniu
TyDraniu
  • Top 25 Contributor
more options

Can you paste here the certificate in a plain text? Thanks.

WhoisdoubleA
WhoisdoubleA Question owner
more options

https://support.mozilla.org/1/firefox/65.0.1/Darwin/en-US/firefox-help

Peer’s Certificate issuer is not recognized.

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

Certificate chain:

BEGIN CERTIFICATE-----

MIIDeDCCAmCgAwIBAgIBXzANBgkqhkiG9w0BAQsFADBoMQswCQYDVQQGEwJDWjEP MA0GA1UECAwGUHJhZ3VlMQ4wDAYDVQQKDAVBVkFTVDEdMBsGA1UECwwUU29mdHdh cmUgRGV2ZWxvcG1lbnQxGTAXBgNVBAMMEEF2YXN0IHRydXN0ZWQgQ0EwHhcNMTgw NzMxMDAwMDAwWhcNMTkwODMxMTIwMDAwWjAeMRwwGgYDVQQDExNzdXBwb3J0Lm1v emlsbGEub3JnMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1RkNHD6R o9GaJyIvyV9NPsOB5ulpGYM/BQFQEh+614G3AE4ZJGH/M/M5GfbY15UfjddX4Ioj laJkyyfx00ko5nm7+728pBCopENtCqTz6NxFSUWeGtQhCcj5/DAOi78V1osmmBOQ NUM5VCRtJJXEri9PHgLzm5t8zOum6ZB6zY/OOwrjBj/GREa2/VAsZtg7DGTRm1st wSNA2fKd+pRZZVlAmy0s9lsXJ9uDnqDHDziUiSNZbfnDDbvR3jawaIliazweA9eW HwV6wqLDk392wYL/pyfTbvPBdblU7pa1mo4+mezl8Lgr4uvd+5TjvlNDniGu6sMv dGEX61qQg5uamwIDAQABo3cwdTAdBgNVHQ4EFgQUYp2B4NSWxI97UeCvRolZ5Igb dnYwHwYDVR0jBBgwFoAUhq4okB+CgJDROv3eLIWZC9D+jL4wMwYDVR0RBCwwKoIT c3VwcG9ydC5tb3ppbGxhLm9yZ4ITc3VwcG9ydC5tb3ppbGxhLmNvbTANBgkqhkiG 9w0BAQsFAAOCAQEApne43uB76vhoAgym7HfkBu9YIxsmmcQiZpA66lBFToaeRN22 5KqGwjOqNbTTv8NQRDGRl4e4f+my4AfYcizEl5bh4xcYDcdD1ip9GO86cxaEkCOp 6JEbzpIc+Nmv3gOOSbfWkaQT59YiZTVqkK5L3AzSBqK7CpsVzSB2kQch6zr0M4DW rT352SBhhBH5LBtWZBKXNIK5VmvxBkNrmPdPs+WxKpH/U4aDKCsMnbwapyMhzHAR sNVd2eZprEtX/ca0dUE7PQIHMyuvYl0feB8FK8vfH10GI02vfz2YikFIZTMMdWIY 1vRKqsYN0ESu538iRZW6/l0xkEtaWNJiDxv+yA==

END CERTIFICATE-----
TyDraniu
TyDraniu
  • Top 25 Contributor
more options

Chosen Solution

The issuer of this cert is: Avast trusted CA, AVAST

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

WhoisdoubleA
WhoisdoubleA Question owner
more options

Thank you! That worked. I may be looking for a better security solution if I have to turn that one off to operate properly! Any recommendations for mac?