SAP Knowledge Base Article - Preview

2958806 - Kerberos Authentication fails with Unsupported encryption SPNEGO token type error


Kerberos authentication is configured for Identity Authentication to allow users to log on without a username and password when they are in the corporate network based on 'Configure Kerberos Authentication' SAP Help documentation.

However, users are still prompted to authenticate with a username and password.

The Troubleshooting Log is showing the following error:

Unsupported encryption SPNEGO token type



Identity Authentication


Identity Authentication 1.0


IAS, Kerberos, SPNEGO, fails, error, login, username and password, Unsupported encryption SPNEGO token type, RC4_HMAC, AES128_CTS_HMAC_SHA1_96, AES256_CTS_HMAC_SHA1_96, NTLMSSP, NEGOEXT , KBA , BC-IAM-IDS , Identity Authentication Service , Problem

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