The Install Certificates key by default will search for certificates in the locations listed below.
Starting in Firefox 65 you can specify a fully qualified path including UNC. (See cert3.der and cert4.pem, in example).
-**Be advised if you wish to load a certificate from a UNC path you must use double backslahes.**
-Example: \\SERVER\\CERTS\CERT5.PEM
+**Be advised if you wish to load a certificate from a UNC path you must use double backslashes.**
+Example: \\\\SERVER\\CERTS\\CERT5.PEM
If Firefox does not find something at your fully qualified path, it will search the default directories.