I recently had a problem while installing Visual Studio 2012 and SQL Server 2008 R2 on a new development machine. My installation sequence was Visual Studio 2012 then install SQL Server 2008 R2.
An error occurred during the middle of SQL Server installation:
The specified account already exists.
I have spent my day trying to fix this problem.
Best Answer
First, search the installation log. In my instance it was under the following path:
In that log I found the following entries:
I then located the file
sqlncli.msi
and opened a command prompt to execute this command:I then uninstalled the SQL Server Native Client and ran the installation for SQL Server again, success.