SYMPTOMS
You may receive an error message when you install Microsoft SQL Server 2005 Service Pack 1 (SP1) on a computer that is running one of the following programs:
- SQL Server 2005 Standard Edition
- SQL Server 2005 Workgroup Edition
- SQL Server 2005 Developer Edition
- SQL Server 2005 Enterprise Edition
The text of the error message resembles the following:
The following unexpected error occurred:
Unable to install Windows Installer MSI file
Additionally, the following error message is logged in the Redist9_Hotfix_KB913090.log file in the %windir%\Hotfix\Redist9\Logs folder:
MSP returned 1618: Another installation is already in progress. Complete that installation before proceeding with this install.
In another scenario, you may receive an error message that resembles the following when you install SQL Server 2005 Express Edition or SQL Server 2005 Express Edition with Advanced Services:
Errors occurred during the installation:
Error 1618 installing Microsoft SQL Native Client. See log file for more detailed information.
Another installation is already in progress. Complete that installation before proceeding with this install
The error message explains that the SQL Native Client is not installed successfully. The following error message is logged in the SQL Native Client installation log file:
Failed to grab execution mutex. System error 258.
Notes- The SQL Native Client installation log file is named SQLSetupNumber_ServerName_SNAC.log. Number represents a number that increases for every installation of SQL Server 2005. The log file that has the largest value for Number in the file name is the log file for the most recent installation of SQL Server 2005.
- The SQLSetupNumber_ServerName_SNAC.log file is located in the %ProgramFiles%\Microsoft SQL Server\90\Setup Bootstrap\LOG\Files folder.