Few questions :
- Have you recently done any upgrade ?
- Are you able to create a new auth scheme ?
- Are you getting this error only for some or all of the authentication scheme ?
- Are you getting this error for an authentication which has not yet been linked to any realm/domain ?
Finally, please provide a screenshot of the list of "related records" for this particular auth scheme using XPSExplorer as follows :
1)Open XPSExplorer by typing XPSExplorer in a cmd prompt on the policy server
2)Select AuthSchemes option number
3)Search for AuthSchemes by selecting S
4)Identify the problematic Authscheme.(Which is not getting deleted from WAMUI) and select that authscheme
5)You will see an option (R - Display Related records )
6)Hit R , it will show all releated Objects
Take a screenshot of the result and attach to this thread.
Answer to above query will help us isolate the problem and provide a relevant solution. In general the error "Failed to find DD reference" is thrown when there are invalid references/links attached to the object.
Cheers,
Ujwol