Firefox:"This Connection is Untrusted"
If resetting the browser to the default settings doesn't fix this, Try deleting the cert8.db file.
See resetting to default state
Deleting the cert8.db file
Open Firefox, Help, Troubleshooting Information, Show Folder under Application Basics, folder will open, keep this open, close Firefox, delete the cert8.db file, open firefox and it will recreate this file and should fix your issues with "This Connection is Untrusted"
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