- #Avast firefox website not secure how to
- #Avast firefox website not secure install
- #Avast firefox website not secure upgrade
- #Avast firefox website not secure software
- #Avast firefox website not secure code
The error occurs on one particular site only
#Avast firefox website not secure how to
Some forms of malware intercepting encrypted web traffic can cause this error message - refer to the article Troubleshoot Firefox issues caused by malware on how to deal with malware problems. More information for IT departments on how to go about this can be found in the Mozilla Wiki page CA:AddRootToFirefox. If you suspect this might be the case, please contact your IT department to ensure the correct configuration of Firefox to enable it to work properly in such an environment, as the necessary certificate might have to be placed in the Firefox trust store first. Some traffic monitoring/filtering products used in corporate environments might intercept encrypted connections by replacing a website's certificate with their own, at the same time possibly triggering errors on secure HTTPS-sites. Monitoring/filtering in corporate networks
#Avast firefox website not secure install
In case you want to manually install the missing certificates for affected accounts, you can refer to this Microsoft support article. Read this Microsoft FAQ page on how to turn off these family features for accounts. In Microsoft Windows accounts protected by Family Safety settings, secure connections on popular websites like Google, Facebook and YouTube might be intercepted and their certificates replaced by a certificate issued by Microsoft in order to filter and record search activity.
#Avast firefox website not secure upgrade
In ESET security products you can try to disable and re-enable SSL/TLS protocol filtering or generally disable the interception of secure connections as described in ESET’s support article.Īffected users of Kaspersky should upgrade to the most recent version of their security product, as Kaspersky 2019 and above contain mitigations for this problem. Uncheck the Show safe results option for those websites which are showing an error message.Click on Settings and enable the Advanced view on the top right of the panel.Open the dashboard of your Bullguard application.In Bullguard security products you can disable the interception of secure connections on particular major websites like Google, Yahoo and Facebook: You can try to repair or remove the program instead when you're having problems accessing secure websites.įor corporate Bitdefender products, please refer to this Bitdefender Support Center page. In Bitdefender Antivirus Free it's not possible to control this setting. In older versions of the product you can find the corresponding option labelled Scan SSL when you go to Modules > Web Protection
#Avast firefox website not secure software
You could try reinstalling it, which might trigger the software into placing its certificates into the Firefox trust store again. Third-party antivirus software can interfere with Firefox's secure connections.
#Avast firefox website not secure code
In particular, the error code MOZILLA_PKIX_ERROR_MITM_DETECTED indicates that Firefox detected connection interception. The most common causes are security software scanning encrypted connections, or malware listening in and replacing legitimate website certificates with their own. If you get this problem on multiple unrelated HTTPS-sites, it indicates that something on your system or network is intercepting your connection and injecting certificates in a way that is not trusted by Firefox. The error occurs on multiple secure sites If you click the Advanced button on a "Warning: Potential Security Risk Ahead" error page and you see the error code SEC_ERROR_UNKNOWN_ISSUER or MOZILLA_PKIX_ERROR_MITM_DETECTED, it means that the provided certificate was issued by a certificate authority that is not known by Firefox and, therefore, cannot be trusted by default. 3.1 Certificate issued by an authority belonging to Symantecĭuring a secure connection, a website must provide a certificate issued by a trusted certificate authority to ensure that the user is connected to the intended target and the connection is encrypted.3 The error occurs on one particular site only.2.3 Monitoring/filtering in corporate networks.2.2 Family Safety settings in Windows accounts.2 The error occurs on multiple secure sites.