How to: Disable Creation of the <solutionname>.root Folder
When you add a solution to source control, your source control plug-in automatically creates an empty <solutionname>.root folder in the database to contain the unified root for the solution. For more information about the unified root, see.
Disabling automatic creation of the <solutionname>.root folder will change the behavior of your source control plug-in when you add multi-project solutions to source control. For one thing, operations that add projects will take more time. Additionally, you will have to respond to redundant prompts when performing source control operations on multiple projects.
To disable the automatic creation of the <solutionname>.root folder
On the Windows desktop, click Start, then Run.
Type Regedit, and then click OK.
Open HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\<version number>\SourceControl.
Select the key DoNotCreateSolutionRootFolderInSourceControl, and click Edit, then Modify.
In the Value data box, change 0 to 1.
Click OK to accept your registry change.