title: SQL Management Studio attach database: Cannot open "Add" dialogue
body: <p>When I press the <code>Add...</code> button in the Attach Databases window I get the following error:</p>
  
  <pre><code>TITLE: Microsoft SQL Server Management Studio
  ------------------------------
  Failed to retrieve data for this request. (Microsoft.SqlServer.Management.Sdk.Sfc)
  For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft%20SQL%20Server&amp;LinkId=20476
  ------------------------------
  ADDITIONAL INFORMATION:
  An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo)
  ------------------------------
  The server principal "callisto\dotancohen" is not able to access the database "model" under the current security context. (Microsoft SQL Server, Error: 916)
  For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft%20SQL%20Server&amp;ProdVer=11.00.1750&amp;EvtSrc=MSSQLServer&amp;EvtID=916&amp;LinkId=20476
  ------------------------------
  BUTTONS:
  OK
  ------------------------------
  </code></pre>
  
  <p>The mention of "current security context" led me to believe that this is a permissions issue. However, when I open  SQL Management Studio as Administrator I can in fact open the <code>Add...</code> dialogue but it will not let me browse to the <code>C:\Users\dotancohen directory</code> in which my database .mdf file is stored.</p>
  
  <p>This is with  SQL Management Studio 2012 RC0 on Windows 7 32 bit. The database .mdf file that I am interested in opening is a 2012 file and 2008 will not open it (my connect.Open() statement fails with 2008, works with 2012). Thank you.</p>
  
  <p><strong>Note that I am not interested in opening SQL Management Studio as administrator to access the database, but rather I am interested in resolving the issue with the user-opened SQL Management Studio to access the database as a regular user. My C# application running in debug mode can open this database without escalated privileges.</strong></p>