Lets begin by testing your keytab file. Create a text file in C:\windows\krb5.ini with the following contents: | [libdefaults] | default_realm = COMPANY.NL | dns_lookup_realm = false | dns_lookup_kdc = false | default_tkt_enctypes=RC4-HMAC | default_tgs_enctypes=RC4-HMAC | | [realms] | COMPANY.NL = { | kdc = 5.21.8.10 | admin_server = 127.0.0.1 | default_domain = COMPANY.NL | } | | [domain_realm] | .company.nl = COMPANY.NL | company.nl = COMPANY.NL | | [appdefaults] | autologin = true | forward = true | forwardable = true | encrypt = true | Edit the above contents to match your system. Then open command prompt, and browser to your JAVA_HOME\bin. Run the following command using kinit.exe: | Kinit <kerberos principal name> | e.g. kinit myuser(a)mycompany.nl It will then prompt you for a password. If that works, then test your keytab file by running the below command: | Kinit –k -t <keytab output path> <kerberos principal name> | If your keytab is correct, you should get "new ticket stored in cache". View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4252660#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...