A database connection could not be established

Yesterday the server was working fine with the 4.3.2 version and a sql express 2014, 
now any time I try to enter in my server they display a form setup like it was a new
instance and when I try to enter the setup values the sever return me this error.
<Sory for my english>
 
The configuration entered is not valid. A database connection could not be established. 
Please check your configuration and try again.
 
The configuration entered is not valid. A database connection could not be established. 
Please check your configuration and try again. com.atlassian.stash.internal.db.DefaultDatabaseManager.validateConfiguration(DefaultDatabaseManager.java:230) com.atlassian.stash.internal.migration.DefaultMigrationService.validateConfiguration(DefaultMigrationService.java:85) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ... Could not get JDBC Connection; nested exception is com.microsoft.sqlserver.jdbc.SQLServerException:
No se pudo realizar la conexión TCP/IP al host SRV17-WEB, puerto 1433. Error: "connect timed out.
Verifique las propiedades de conexión, compruebe que hay una instancia de SQL Server ejecutándose en el host y
aceptando las conexiones TCP/IP en el puerto y compruebe que no hay ningún firewall bloqueando las conexiones
TCP en el puerto.". org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80) com.atlassian.stash.internal.db.DefaultDatabaseValidator.validate(DefaultDatabaseValidator.java:44) com.atlassian.stash.internal.db.DefaultDatabaseManager.validateConfiguration(DefaultDatabaseManager.java:227) ... No se pudo realizar la conexión TCP/IP al host SRV17-WEB, puerto 1433. Error: "connect timed out. Verifique las
propiedades de conexión, compruebe que hay una instancia de SQL Server ejecutándose en el host y aceptando las
conexiones TCP/IP en el puerto y compruebe que no hay ningún firewall bloqueando las conexiones TCP en el puerto.". com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:191) com.microsoft.sqlserver.jdbc.SQLServerException.ConvertConnectExceptionToSQLServerException(SQLServerException.java:242) com.microsoft.sqlserver.jdbc.SocketFinder.findSocket(IOBuffer.java:2280) ...

1 answer

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I'm afraid that really is what the error message said - it's trying to reach the database over your network, and it can't.  Check the network and the database server is running and accepting connections.

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