Mozilla VPN is currently experiencing an outage. Our team is actively working to resolve the issue. Please check the status page for real-time updates. Thank you for your patience.

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

SEC_ERROR_UNKNOWN_ISSUER: cannot add exception (no button)

more options

Hey,

because of my own DNS server, im blocking some sites, and instead of resolving the host name to a unused IP, im resolving it with the IP of my webserver, where i can do some stuff. Because of that, sometimes a website is requested using HTTPS, and therefore i had to create a self-signed certificate (which is not matching, but thats ok for me). Now the problem, i have to add the certificate to those sites, that the "redirection" works without problems, but on the UI where i should be able to do so, it seems like the real "add exception" button is missing... Is it a bug or am i just blind?? ps: it seems like that the image upload is not working... i will explain it by words: When you are on the "Connection is not secure" (sorry, im using firefox in german, maybe its called something similar), click on "Advanced" then on "Add exception...", on that UI, there should be a button "Confirm Security Exception", but on my UI, there isnt... The last thing i see on the UI is something like "Keep this setting" (the checkbox) There are only two buttons on that UI: "Download Certificate" and "View..." Greetings, Georg

Hey, because of my own DNS server, im blocking some sites, and instead of resolving the host name to a unused IP, im resolving it with the IP of my webserver, where i can do some stuff. Because of that, sometimes a website is requested using HTTPS, and therefore i had to create a self-signed certificate (which is not matching, but thats ok for me). Now the problem, i have to add the certificate to those sites, that the "redirection" works without problems, but on the UI where i should be able to do so, it seems like the real "add exception" button is missing... Is it a bug or am i just blind?? ps: it seems like that the image upload is not working... i will explain it by words: When you are on the "Connection is not secure" (sorry, im using firefox in german, maybe its called something similar), click on "Advanced" then on "Add exception...", on that UI, there should be a button "Confirm Security Exception", but on my UI, there isnt... The last thing i see on the UI is something like "Keep this setting" (the checkbox) There are only two buttons on that UI: "Download Certificate" and "View..." Greetings, Georg

All Replies (2)

more options

Aaah, now it worked with the screenshot

more options

Hmm, it seems the dialog is too short for its content. Is it a resizable window, where you could drag down from the lower right corner to reveal the buttons?

If it is not resizable, you could try tabbing: press Tab and watch the selection move from one control on the form to the next. Once it moves past the checkbox, try pressing Enter to confirm.