Can't create dbo schema
<p>I have been searching a lot for a solution for my problem but haven't find
any.</p>

<p>The problem is when I create schema dbo I get below error.  </p>

<pre><code>CREATE SCHEMA dbo;
Msg 2760, Level 16, State 1, Line 2
The specified schema name "dbo" either does not exist or you do not have permission to use it.
Msg 2759, Level 16, State 0, Line 2
CREATE SCHEMA failed due to previous errors.
</code></pre>

<p>Some explanation I use a product called DbWrench for database design and when
the design is ready a generate the script which create all the objects that are missing in the MSSQL database that I'm connected to.
So the problem as I mentioned is the above  statement CREATE SCHEMA dbo;</p>

<p>In the generated script is the first statement CREATE SCHEMA dbo;</p>

<p>So even if I log in as administrator and run this statement CREATE SCHEMA dbo; 
from within SQL Server I get the same error.</p>

<p>Here is just the first rows in the script that will be run agains the connected
MSSQL Server</p>

<pre><code>USE DiseMSSQL_new;

CREATE SCHEMA dbo;
</code></pre>