Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

Om de ûnderfining foar jo te ferbetterjen is tydlik de funksjonaliteit dan dizze website troch ûnderhâldswurk beheind. Wannear in artikel jo probleem net oplost en jo in fraach stelle wolle, kin ús stipemienskip jo helpe yn @FirefoxSupport op Twitter en /r/firefox op Reddit.

Sykje yn Support

Mij stipescams. Wy sille jo nea freegje in telefoannûmer te beljen, der in sms nei ta te stjoeren of persoanlike gegevens te dielen. Meld fertochte aktiviteit mei de opsje ‘Misbrûk melde’.

Mear ynfo

Dizze konversaasje is argivearre. Stel in nije fraach as jo help nedich hawwe.

Secure Connection Failed

more options

I get this error message on several sites, including Yahoo and, unbelievably, this site (support.mozilla) as of a few hours ago:

"An error occurred during a connection to my.yahoo.com. Invalid OCSP signing certificate in OCSP response. (Error code: sec_error_ocsp_invalid_signing_cert)"

Once again, FF doesn't like certain certificates, including ones from "known" hackers, such as Yahoo (!)

I am using a vpn, but error shows up without it also.

Btw, all site load normally on IE ad Chrome.

I get this error message on several sites, including Yahoo and, unbelievably, this site (support.mozilla) as of a few hours ago: "An error occurred during a connection to my.yahoo.com. Invalid OCSP signing certificate in OCSP response. (Error code: sec_error_ocsp_invalid_signing_cert)" Once again, FF doesn't like certain certificates, including ones from "known" hackers, such as Yahoo (!) I am using a vpn, but error shows up without it also. Btw, all site load normally on IE ad Chrome.

Alle antwurden (2)

more options

Please update to the most recent version of Firefox:

more options

OCSP is a way to check whether a certificate which appears legitimate has been revoked after issuance.

Although I haven't personally seen this error message mentioned here before, many users have certificate issues in Firefox due to incomplete setup with their security software (e.g., Kaspersky, ESET, BitDefender, AVAST) or because they have malware.

It probably is easiest to investigate that possibility in IE or Chrome where the page loads. Click the padlock icon in the address bar and view the certificate. Zero in on the Issuer/Issued by information. What do you find there, for example, for this site? I see "DigiCert High Assurance EV CA-1".