SQLSTATE[08001]: [Microsoft][ODBC Driver 11 for SQL Server]TCP Provider: No connection could be made because the target machine actively refused it.

Check and double-check your credentials.

I'm concerned that you say you changed in database.php, you should not store any private credentials there.

You can check what credentials are in place in tinker with config('database')

Check https://laracasts.com/discuss/channels/laravel/sqlstate08001-microsoftodbc-driver-13-for-sql-servertcp-provider-no-connection-could-be-made-because-the-target-machine-actively-refused-it-sql-select-top-1-from-settings-where-name-site-title-and-settingsdeleted-at-is-null.

issue resolved.I set the default connection to sqlsrv but i dont know why despite of this it was trying to connect with mysql.Then i remove mysql array in config/database file then it start working

In my case this link helps me solve this issue

https://www.semicolonworld.com/question/51405/unable-to-connect-sqlexpress-with-laravel-5-6