If you’ve been digging through your FileMaker Server files or troubleshooting a secure connection, you may have stumbled across a file named licensecert.fmcert (or just .fmcert files in general). At first glance, it looks like a typo. But this little file plays a big role in keeping your custom apps secure.

The CStore (Certificate Store) directory is where FileMaker keeps its cryptographic assets. If you see licensecert.fmcert there, treat it with the same security caution you would a private key file (because that’s essentially what it contains).