[krbdev.mit.edu #9136] S4U2Proxy API error

[Rajbir Chahal via RT]

Thu Aug 22 15:15:39 2024: Request 9136 was acted upon.
 Transaction: Ticket created by rajbir.chahal at oracle.com
       Queue: krb5
     Subject: S4U2Proxy API error
       Owner: Nobody
  Requestors: rajbir.chahal at oracle.com
      Status: new
 Ticket <URL: http://kerborg-prod-app-1.mit.edu/rt/Ticket/Display.html?id=9136 >



Hello,

I am testing Kerberos S4U2Proxy API (krb5_get_credentials_for_proxy()).
Client is MIT Kerberos (version 5-1.21.2) test program, krb5-1.21.2/src/tests/s4u2proxy.c. Kerberos KDC is Active Directory (on Windows Server 2016).

On making this API call, the client receives error "-1765328371, KDC can't fulfill requested option".

Has this functionality been tested with Active Directory? Has it been tested with any other KDCs?

Please share guidance about resolving this issue.

I have reviewed the krb5-bugs archive and did not find a previous bug related to this issue.

thanks,
Rajbir