We have the same problem:
MSP Error: 29506 SQL Server Setup failed to modify security permissions on
file c:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data\ for user *. To
proceed, verify that the account and domain running SQL Server Setup exist,
that the account running SQL Server Setup has administrator privileges, and
that exists on the destination drive.
This account has sysadmin privilege and is a member of the Administrators
group on this computer. I checked this
http://support.microsoft.com/kb/916766, but it doesn't help.
"Martin100" wrote:
> Installation Failure
> Error Code: 0x7342 (for SQL 2005 SP2)
> Error Code: 0x643 (for Visual Studio 2005 SP1)
> When I try to install SQL 2005 SP2 or Visual Studio 2005 SP1 I get error
> messages and the install fails. I have. The current version is SQL Server
> 9.0.2047. What can I do to solve the problem?
> Martin
>