I encountered the error during the Web AS 6.40 installation
WARNING 2008-07-16 22:51:27
Execution of the command "C:\usr\sap\C11\JC00\exe/sapstartsrv.exe -r -q -p C:\usr\sap\C11\SYS\profile\START_JC00_DT11064845 -s C11 -n 00 -U DT11064845\SAPServiceC11 -P XXXXXX -e DT11064845\c11adm" finished with return code -1. Output: Cannot register COM interface.
I try sapstartsrv.exe manually and got Access Denied error but the account have administrator right. I suspect it could be due to the COM interface not clean up properly previously. Any way I can check or delete it manually?