<10-22-2011 11:39:14> Successfully created local user group SMS Admins on the local machine with AINS-SCCM\Administrator as the member. <10-22-2011 11:39:15> Checking media: D:\SMSSETUP\Client\x64\msrdcoob_amd64.exe <10-22-2011 11:39:15> Verifying hash for file 'D:\SMSSETUP\Client\x64\msrdcoob_amd64.exe' <10-22-2011 11:39:15> File hash check failed for D:\SMSSETUP\Client\x64\msrdcoob_amd64.exe <10-22-2011 11:39:15> Checking alternate path: C:\Download\msrdcoob_amd64.exe <10-22-2011 11:39:15> Verifying hash for file 'C:\Download\msrdcoob_amd64.exe' <10-22-2011 11:39:15> File hash check failed: 0x80070002 <10-22-2011 11:39:15> VerifyExternalFile failed: 0x80070002 <10-22-2011 11:39:15> Failed to find valid source for required external file <10-22-2011 11:39:15> Unable to find valid source for required file 'msrdcoob_amd64.exe'. Aborting setup. <10-22-2011 11:39:15> Setup has encountered fatal errors while performing file operations.
Solution :
Ran the upates completely from the SCCM setup wizard and let it download all the components.
SCCM installation was smooth thereafter.