Because SQL Server 2008 defaults to not allow remote connections, the SA account is also disabled by default if you want to use SSMS locally (SQL Server Management Studio Express)
A two-part configuration is required to connect to SQL Server 2008 on a remote server:
1,sql Server Management Studio Express (SSMS)
2,sql Server Config Manager/sql Server Configuration Manager (abbreviated SSCM)
Here are the specific steps to be done:
(1: open SSMs, connect to the database as Windows, log on, right-select the "Properties"
On the left, select "Security" and select "SQL Server and Windows authentication mode" on the right to enable hybrid login mode
(2: Select "Connect", tick "Allow remote connection to this server", then click "OK"
(3: expand Security, login name, "sa", right-select "Properties", then "General" on the left, "SQL Server Authentication" to the right, and set the password; Select "Status", check "Enable", click "OK"
(4: Right-click the database, select "Facet", set the "Remoteaccessenabled" property to "True", point "OK"
(5: Now that SSMs is set up, exit first, and then log in with SA, success means that the SA account is enabled
Next, start configuring SSCM, open SSCM:
(6: Check the SQL Server service on the left to make sure that SQL Server on the right and SQL Server Browser are running
(7: TCP/IP on the right: double-click to open the Settings panel to modify it to "Enabled",
Select the "IP addersses" tab, set the port "1433",
"Client protocols" TCP/IP is also modified to "Enabled"
(8: configuration complete, restart SQL Server 2008, if Visual Studio 2010 is:
(9: You should be able to use it at this time, but check the firewall: Turn on firewall settings.) The SQLServr.exe (C:\Program Files\Microsoft SQL Server\mssql10. Sqlexpress\mssql\binn\sqlservr.exe) is added to the Allowed list.
SQL Server R2 Open remote Connection