标准用户的Microsoft SQL Server登录失败

Question

I'm developing a Windows Forms application which connects to a Microsoft SQL Server database. Using SQL Server authentication, the login works, also works for Windows authentication when the application is run as administrator.

The problem is when it isn't run as administrator, and it is run under a session of a Standard user, the application gives the following error:

Cannot open database DATABASENAME requested by the login. The login failed. Login failed for user COMPUTERNAME\\USERNAME

Answer 1

Login without Admin Mode

Most likely your problem is that your database is setup to only have logins defined for administrative users. Go into Management Studio as an admin user, and go to the Security -> Logins category...

Note :

Starting with Windows Vista back in 2007, Microsoft made the very smart decision to limit the ability of applications to make key changes to a user's PC. Only applications with administrator privileges could access important parts of Windows, and users had to specifically enable these apps to “ run as administrator .”

Adding manifest for .NET Applications

You can tun your App in Admin mode by adding a manifest file.

More reference here

Answer 2

The below instructions should work using SQL Server Management Studio

1. SQL Server mixed mode, Windows Authentication and SQL Server (right click SQL instance under Server Management -> Properties -> Security)
2. Add the login to SQL Security -> Logins
3. Add login to the Database -> Security -> Users
4. Assign user permissions for tables and stored procedures (right click table or stored procedure -> properties -> permissions -> search -> browse -> select login -> grant 'select, delete, update' for login as needed)
5. Use connection string: PROVIDER=SQLOLEDB;DATA SOURCE=<ip_address>,<port_number>;NETWORK LIBRARY=dbmssocn;INITIAL CATALOG=<database_name>;User ID=<user_name>;Password=<password>