I don't understand Spanish, please post in English.

You mention SQL server, but the screenshot of the error refers to mysqli driver, so maybe you have a configuration problem.

For the record, there are some known issues with MSSQL support.

hbriones,

You did not provide any feedback; I am therefore resolving this issue as "no change required".

Feel free to reopen the issue at a later time and provide the requested information.

Se requiere realizar la compatibilidad de la Versión de Mantis 1.3 con Microsoft SQL 2008 y 2012

As mentioned before, we do not understand Spanish. You are not providing any additional information, so unless you can do so, there is no point in reopening the issue.

Google Translate:
Como se mencionó anteriormente, no entendemos español. No está proporcionando ninguna información adicional, por lo que a menos que pueda hacerlo, no tiene sentido reabrir el problema.

Hi good Afternoon,

I attach the screens of the error that sends me, when configuring mantis v1.3

mantisinstallphp1.JPG (158,066 bytes)   

mantisinstallphp1.JPG (158,066 bytes)   

@hbriones
I can't help that much as I don't use SQL-Server
I assume this is what you would need
https://msdn.microsoft.com/en-us/library/cc296170(v=sql.105).aspx

Even after that, you might get problems.
Like dregad said:

For the record, there are some known issues with MSSQL support.

So I recommend to use MySQL, at least if you are not an experienced PHP developer and deeper knowledge of MSSQL.

As per http://mantisbt.org/docs/master-1.3.x/en-US/Admin_Guide/html-desktop/#admin.install.requirements.software you need to install the sqlsrv PHP extension. For further information, see http://php.net/manual/en/intro.sqlsrv.php.

And I second atrol's recommendation to use MySQL.