Why does my Mozilla browser display “The server has encountered bad data from the client”?

Global Support Centre > c2Net Stronghold > FAQ

Mozilla browsers display this message if the certificate installed on your server contains a public key larger than 2048 bits. Stronghold allows you to create key pairs up to 4096 bits in length. However, many browsers have problems processing keys longer than 2048 bits. To resolve this issue, generate a 2048bit key pair and CSR