Regkey: [HKLM\SOFTWARE\OpenAFS\Client\Realms\<Realm Name>\<Cell Name>]
Type: REG_SZ
Default: <none>
This key is used to specify the token acquisition method to be used. When unspecified, the AFS provider will automatically try Kerberos v5 and then Kerberos v5 (if available). As of this writing valid method names include "Auto", "Kerberos5", "Kerberos524", "Kerberos4".
Note: Kerberos524 and Kerberos4 cannot be used with 64-bit Kerberos for Windows.