Hi Ronald,A license key can have an expiration date. If you have issues with your license key, I would suggest to raise an incident with XX-SER-LIKEY-BOJ.Regards,James
The known issue back in November was the Microsoft patch that caused many SSO issues, see KBA 3118389 - SSO failing for all users suddenly server error is Message stream modified. Check if you have ANY of those patches listed in Cause section install...
If you unchecked the two inheritance boxes, you can check those boxes again. Try the default Enterprise Administrator user which will always have access (permissions are hard coded).
There is nothing attached. Basically, you should not use "Use single sign-on when refreshing reports at view time" most of the time. You should most of the time use the method described by Dell.