# SQL Express Usage

When SQL Server Express version is installed, connection problems may be encountered in the web interface. In SQL Server Express installation, listening on port 1433 over TCP/IP is disabled by default.

<figure><img src="https://2904645777-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F5ipN5tzyFn3WnJYxG6xL%2Fuploads%2FHEqCmgxMazmETKBuVhuc%2Fimage.png?alt=media&#x26;token=ef1d510e-91f9-4b1e-8a78-8ad3509d6b8b" alt=""><figcaption><p>SQL Server Configuration Manager</p></figcaption></figure>

TCP/IP must be enabled. After TCP/IP enabling, SQL Server service must be restarted. SQL Server starts listening over TCP 1433 and accepts connection requests.