Why am I getting "Your connection is not secure" all of a sudden on many sites including some as prominent as Google?
Recently I have started getting this "Your connection is not secure" errors rampantly with no rhyme or reason, it seems. Most of the time it is temporary, i.e. on the same website, the error disappears after some time. These are not some unknown small websites but many prominent ones like Google etc.
This has never happened before. I have been using Firefox for nearly 15 years now. Always keep it updated to the latest version.
글쓴이 arcmor 수정일시
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Did you recently use the Firefox refresh feature and created a new profile?
You can check if there is more detail available about the issuer of the certificate.
- click the "Advanced" button show more detail
- click the blue error text (SEC_ERROR_UNKNOWN_ISSUER) to show the certificate chain
- click "Copy text to clipboard" and paste the base64 certificate chain text in a reply
If clicking the blue error text doesn't provide the certificate chain then try these steps to inspect the certificate.
- open the Servers tab in the Certificate Manager
- Options/Preferences -> Privacy & Security
Certificates: View Certificates -> Servers: "Add Exception"
- Options/Preferences -> Privacy & Security
- paste the URL of the website (https://xxx.xxx) in it's Location field
Let Firefox retrieve the certificate -> "Get Certificate"
- click the "View" button and inspect the certificate
You can see detail like the issuer of the certificate and intermediate certificates in the Details tab.
cor-el said
Did you recently use the Firefox refresh feature and created a new profile? You can check if there is more detail available about the issuer of the certificate.If clicking the blue error text doesn't provide the certificate chain then try these steps to inspect the certificate.
- click the "Advanced" button show more detail
- click the blue error text (SEC_ERROR_UNKNOWN_ISSUER) to show the certificate chain
- click "Copy text to clipboard" and paste the base64 certificate chain text in a reply
Let Firefox retrieve the certificate -> "Get Certificate"
- open the Servers tab in the Certificate Manager
- Options/Preferences -> Privacy & Security
Certificates: View Certificates -> Servers: "Add Exception"- paste the URL of the website (https://xxx.xxx) in it's Location field
You can see detail like the issuer of the certificate and intermediate certificates in the Details tab.
- click the "View" button and inspect the certificate
No. Thanks. But if I have to do this rigmarole every time (several times a day) I would rather use another browser, sorry to say. It is a bug in Firefox which Firefox should fix and not expect the users to figure out.
Once the cause is found, it can be fixed and should go away.
Did you check the certificate chain for site that aren't working?
If you get this on reputable sites like Google then either some security software or other software is acting as a man-in-the-middle and sends its own certificate or you are using a proxy or VPN.