How to Fix Mozilla Firefox Error – “MOZILLA_PKIX_ERROR_SELF_SIGNED_CERT”?
What is a Self-Signed Certificate?
So, while trying to open the website on Mozilla Firefox, if you come across this error message “MOZILLA_PKIX_ERROR_SELF_SIGNED_CERT” then no need to worry, as it’s one of the error message similar to Google Chrome error message “NET::ERR_CERT_AUTHORITY_INVALID” which occurs in the browser whenever,
- Self-signed certificates are used
- Untrusted CA’s like WoSign, Startcom Certificates are used (One of the possibilities, though it won’t happen)
What Does Error Message “Warning: Potential Security Risk Ahead with MOZILLA_PKIX_ERROR_SELF_SIGNED_CERT” means?
How to Fix Mozilla Firefox Browser Error Message “MOZILLA_PKIX_ERROR_SELF_SIGNED_CERT”?
Note: Ignoring any errors related to SSL/TLS Certificate may weaken the security of your device. If you still want to risk anyway then avoid sharing any sensitive information like name, passwords, phone number, physical address or Social Security Number (SSN).
1. Enable Network.Stricttransportsecurity.Preloadlist
- In the Mozilla Firefox address bar, type about:config
- Look for “network.stricttransportsecurity.preloadlist”
- And set the last field Value to “false” and restart the browser. If you still see that error, move to below solution.
2. Clearing the SSL State
- From the windows search bar, go to Internet Options and then Internet Properties.
- Click on Content and Click on Clear SSL State option.
- Once it completes, it will display the message “The SSL cache was successfully cleared”.
3. Click on “Accept the Risk and Continue” while Ignoring an Error
- Click on “Advanced” and then
- Click on “Accept the Risk and Continue.”