The SSO service failed to start

During BizTalk 2009 configuration SSO service failed to start.

following is done after a google search

1. Open a command window
2. Go to C:\Windows\Microsoft.NET\Framework64\v2.0.50727
3. regasm "C:\Program Files\Common Files\Enterprise Single Sign-On\win32\ssosql.dll"
4. regasm "C:\Program Files\Common Files\Enterprise Single Sign-On\ssosql.dll"

Note: On a 64-bit server, regasm will need to be run for both the 32-bit and 64-bit versions of ssosql.dll.

problem solved