MSSQL - Kerberos Authentication - No CallbackHandler available

[flegare]

Hi all,

AD-authenticated SQL server connection is failing with this exception:

javax.security.auth.login.LoginException: No CallbackHandler available to garner authentication information from the user

Config files uploaded to  Connector Files folder, mssql jar uploaded to External Jars folder.  Can't find much information for this exception but ktab list shows id with AES-128 and AES-256

Any insights?

[rushikeshvartak]

• Get Restart from saviynt support as its needs connector service restart.
• Raise support ticket

[flegare]

Issue was related to keytab file's physical path (/Saviynt_Shared/Saviynt/ConnectorFiles) not being specified in SQLJDBCDriver.conf.  Added, re-uploaded, app restart and connection is now successful.

[rushikeshvartak]

Yes correct path below 

SQLJDBCDriver {
com.sun.security.auth.module.Krb5LoginModule required useTicketCache=false useKeyTab=true doNotPrompt=false keyTab="/saviynt_shared/saviynt/ConnectorFiles/krb5.keytab" principal="AUTOMATION-S@RUSHI.COM";};