GLPPXY017E Error error string occurred for back-end server 'server ID': GSSAPI bind failed using principal name 'dn'.

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Explanation

The proxy server was trying to use the principal name to perform a GSSAPI bind with the back-end server, but failed.

User response

Verify that the proxy server is correctly configured to accept Kerberos connections. Also verify that the proxy server's principal name is in the global administration group.