Avast blocking sites firefox install#
Avast blocking sites firefox update#

This involves presenting a fake certificate to Firefox, otherwise, it wouldn't be able to see inside the encrypted connection.īecause Firefox has a separate certificate store from IE and Chrome (I don't know about Opera), you may need to do a little extra setup to make that feature work with Firefox.

Avast blocking sites firefox update#

Hi pipefitter619, did you recently use Firefox's Reset feature or update your avast! software? Avast Web Shield has a feature to intercept and scan your web traffic. *Note that it is not recommended to add a permanent exception in cases like this, so only use it to inspect the certificate. *Note that some firewalls monitor (secure) connections and that programs like Sendori or FiddlerRoot can intercept connections and send their own certificate instead of the website's certificate. *Click the 'View.' button and inspect the certificate and check who is the issuer of the certificate. *Click the link at the bottom of the error page: 'I Understand the Risks'

Note that it is not recommended to add a permanent exception in cases like this, so only use it to inspect the certificate.

Note that some firewalls monitor (secure) connections and that programs like Sendori or FiddlerRoot can intercept connections and send their own certificate instead of the website's certificate.

If 'I Understand the Risks' is missing then this page may be opened in an (i)frame and in that case try the right-click context menu and use 'This Frame: Open Frame in New Tab'. You can see more Details like intermediate certificates that are used in the Details pane.

Click the 'View.' button and inspect the certificate and check who is the issuer of the certificate.

Let Firefox retrieve the certificate: 'Add Exception' -> 'Get Certificate'.

Click the link at the bottom of the error page: 'I Understand the Risks'.

You can retrieve the certificate and check details like who issued certificates and expiration dates of certificates.

Avast blocking sites firefox install#

If the certificate is not trusted because no issuer chain was provided (sec_error_unknown_issuer) then see if you can install this intermediate certificate from another source. Check out why the site is untrusted and click 'Technical Details' to expand this section.