Secure Connection Failed, Error code: MOZILLA_PKIX_ERROR_REQUIRED_TLS_FEATURE_MISSING
I was unable to open my website [[Er Karan Arora|https://erkaranarora.com/]] and [[Itronix Solution|https://itronixsolution.com/]] in mozilla firefox windows 7 Operating System. It works well in windows 10 but unable to open in Windows 7
Secure Connection Failed
An error occurred during a connection to itronixsolution.com. A required TLS feature is missing.
Error code: MOZILLA_PKIX_ERROR_REQUIRED_TLS_FEATURE_MISSING
The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. Please contact the website owners to inform them of this problem.
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This is an uncommon error which can occur when there’s an issue with OCSP stapling on your webserver. It happens when OCSP stapling is required, but not available. We recommend to contact your hosting provider about this issue, they will be able to enable OCSP stapling which will fix the issue.
The other reason this error can occur is if you are behind a proxy. If that is the case, you can try the following to access the site:
- Paste about:config in your browsers address bar
- Enter ocsp in the search field
- Click on security.ssl.enable_ocsp_must_staple and change the value from true to false
As posted above, the server has enabled "OCSP Must Staple", but doesn't send the OCSP response is not stapled.
Current Firefox release have enabled the "OCSP Must Staple" feature (security.ssl.enable_ocsp_must_staple = true), so this failure throws an error. Note that "OCSP Must Staple" is a security feature and you should leave this enabled (i.e. leave the pref at its default value true) and you should fix this on the web server. I notice that the server got a new certificate today.
- Valid from Mon, 28 Mar 2022 05:41:21 UTC
- Valid until Sun, 26 Jun 2022 05:41:20 UTC (expires in 2 months and 28 days)