1。 【2008 R2】A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)

程序配置文件web.config中的数据库连接instance没有启动或者配置错误。

2. 【2008 R2】Saving changes is not permitted. The changes that you have made require the following tables to be dropped and re-created.

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2. 【2008 R2】Saving changes is not permitted. The changes that you have made require the following tables to be dropped and re-created

3. 【2005】 Setup failed - no package <sqlncli.msi> 

refer to

3.1 Extracted the files in a separate directory:      SQLEXPR.EXE" /x:c:\sqlexprtmp

 

3.2 Then searched and executed “sqlncli.msi”

3.3 Click on “uninstall”.

3.4 Reboot computer and reinstall sql express.

4. 【2005】 cannot be executed due to WMI configuration 1626

Run attached file named WMIFIX.bat

5. Installation log file location

Find installation log file C:\Program Files\Microsoft SQL Server\100\Setup Bootstrap\Log\<date folder>