Application Log in Event Viewer shows following Error

Cannot recover the master database. SQL Server is unable to run. Restore master from a full backup, repair it, or rebuild it.

The above error shows that the System Database like Master has been corrupted. To fix this issue we need to rebuild the MSSQL system databases from Installation Disk.

1) Insert MSSQL Installation Disk in Optical Disk Drive

2) Go to Command Prompt (Start >> run >> cmd >> Enter)

3) Execute Following Command:

Here, [Instance Name] will be the name of the MSSQL instance you want to set like MSSQLSERVER and [Password] will be the sa password for MSSQL.

Now try to start MSSQL service.

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Automating SQL server installation is made easier in MSSQL 2005 version and we can define the components which need to be installed with setup.exe via command prompt OR we can create an ini file which will contain all the information about the installation. In this post I will explain the steps to install MSSQL 2005 using command prompt with the help of single command.

Install MSSQL using Command Prompt (By Defining all modules in command)

1) Insert the MSSQL installation media into the disk drive.

2) Open Command Prompt (Start >> Run >> cmd >> Enter)

3) Execute following command

Here, ADDLOCAL is set to “All” which will install all the components and modules bundled with the MSSQL. If you want customized modules then you can declare the modules instead of “All“.

Install MSSQL using .ini file

1) Open Notepad (Start >> Run >> Notepad >> Enter)

2) Insert all the “Installation Parameters” in that file. Following is the sample file which I have used to install MSSQL on my System

Here, PIDKEY will be the Product Key of the product shipped with MSSQL.

3) Save this file with extension .ini (like sqlsetup.ini)

4) Execute following command to run the setup

Points to Note:

1) While specifying the accounts like SQLACCOUNT, AGTACCOUNT and SQLBROWSERACCOUNT make sure you define proper users. Users can be

2) Microsoft provides a template.ini file in the installation media but I would strongly recommend to remove the options that you don’t want.

You can refer to Microsoft tutorial for more information and component help at http://msdn.microsoft.com/en-us/library/ms144259.aspx

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Cannot Connect to WMI Provider. You do not have permissions of the server is unreachable. Note that you can only manage SQL Server 2005 servers with the SQL Server Configuration Manager.
Invalid namespace[0x8004100e]

I have searched on Google and found that it happens when 32bit MSSSQL application is installed on 64bit Server and they suggested to execute the following command to fix the issue.

mofcomp "%programfiles%\Microsoft SQL Server\90\Shared\sqlmgmproviderxpsp2up.mof"

MOF files are appropriate for static management data or dynamic management data. Static data includes details such as the computer user’s phone number, office number, and name. Dynamic data includes details such as Microsoft SQL Server(tm) database sizes and applications installed with Windows Installer.

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Login failed for user 'sa'. The user is not associated with a trusted SQL Server connection. (Microsoft SQL Server, Error: 18452)

For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=18452&LinkId=20476

This Error occurs when SQL Server doesn’t support SQL Server Authentication Mode (Mixed Mode for MSSQL 2000). This issue can be fixed using following Steps:

1) Connect the MSSQL server using Windows Authentication of the server.

2) Right Click on the server name in the tree on the left and go to properties.

3) Click the Security Option. Now under Server authentication Select “SQL Server and Windows Authentication Mode” and press OK.

Now try to connect MSSQL using SA user. Please refer Microsoft KB Article 840219 for more information

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