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Multiple profiles & connection not secure

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  • Last reply by ldene

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I created a 2nd firefox profile, but when i visit some websites via that 2nd profile i get the "connection is not secure" and other sites just don't format properly (these exact same websites function properly in the 1st profile)

I read somewhere that it might be the system clock, but that's correct, i have no add-ons, extensions etc installed on the 2nd profile.

Anyone have any ideas?

I created a 2nd firefox profile, but when i visit some websites via that 2nd profile i get the "connection is not secure" and other sites just don't format properly (these exact same websites function properly in the 1st profile) I read somewhere that it might be the system clock, but that's correct, i have no add-ons, extensions etc installed on the 2nd profile. Anyone have any ideas?

Chosen solution

You can copy the cert8.db file from a working profile to the profile folder of not working profile folders.

You can use this button to go to the current Firefox profile folder:


Firefox automatically stores intermediate certificates that servers send in the Certificate Manager for future use. Stored intermediate certificates show as "Software Security Device" in the "Security Device" column in the Certificate Manager.

A server needs to send the full certificate chain that includes all required intermediate certificates. Firefox automatically stores intermediate certificates that servers send in the Certificate Manager for future use, so if you have visited a website that has send this intermediate certificate in the past then Firefox will not display the error page when you visit a server that doesn't send this intermediate certificate.

If you visit a server that doesn't send a full certificate chain then you will only get an untrusted error if Firefox hasn't yet stored this intermediate certificate because you have visited a server in the past that has send this certificate, but you do get an untrusted error if this intermediate certificate isn't stored yet.

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Chosen Solution

You can copy the cert8.db file from a working profile to the profile folder of not working profile folders.

You can use this button to go to the current Firefox profile folder:


Firefox automatically stores intermediate certificates that servers send in the Certificate Manager for future use. Stored intermediate certificates show as "Software Security Device" in the "Security Device" column in the Certificate Manager.

A server needs to send the full certificate chain that includes all required intermediate certificates. Firefox automatically stores intermediate certificates that servers send in the Certificate Manager for future use, so if you have visited a website that has send this intermediate certificate in the past then Firefox will not display the error page when you visit a server that doesn't send this intermediate certificate.

If you visit a server that doesn't send a full certificate chain then you will only get an untrusted error if Firefox hasn't yet stored this intermediate certificate because you have visited a server in the past that has send this certificate, but you do get an untrusted error if this intermediate certificate isn't stored yet.

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That worked, thank you.