Invalid SSL cert / Insecure Connection
 

Hi, I get this when I try to log into FastMail via browser: https://imageshack.com/a/img922/9176/omhgyh.jpg

Is it just me, or do other people get cert expiry issues?

Thanks,
J

Works fine here. Might be just your setup.

Note that the message says the issuer certificate has expired (not FastMail's certificate). That suggests security information in Firefox is out of date.

Clear your cashe and cookies

Strange, doesn't help... Works on my phone just fine. Must be either the laptop or the work network I'm on.

Works just fine using Thunderbird though on the work laptop, not sure what the difference is in terms of SSL certs.

If you cannot easily figure out the problem with Firefox, I would suggest completely uninstalling Firefox (including deleting the Firefox folders) and doing a fresh install. I suspect something is broken such that some required updates have not been correctly applied.

After a little research, my suggestions are:

• Check that the PC clock is set accurately to the correct date and time.
• Scan your PC for malware. Infections and registry corruption can cause this type of error.
• Be sure you are using the latest version of Firefox and update if needed.

Bill

If you have a corporate web proxy that pops up a confirmation page before letting you out, that could be the issue. (We have that here, so I open a new window to fastmail.fm which doesn't have HTST enabled, then I can click thru the corporate proxy splash page which then allows all webmail domains for 30 minutes.)