Instead of the expected behavior wherein attempting to initiate a GSS context causes a popup prompting the user to get kerberos tickets, we get an error message: GSS-API(maj): Unspecified GSS failure. Minor code may provi GSS-API(min): Unknown code 0 Couldn't inquire DEFAULT INITIATING credentials [...] Return Code -4 System Call gss_inquire_cred counter 1 This seems to be present both in my proto-4.1 builds and in 4.0.1