Unable to open Server Explorer in Visual Studio

When server explorer doesn't open when clicking on the menu option View|Server Explorer, the first solution is to run the command /ResetSkipPkgs on the visual studio command prompt. Open a development command line window by clicking on the Start|Programs|Microsoft Visual Studio 2008|Visual Studio Tools|Visual Studio 2008 Command Prompt shortcut.
Type devenv /resetskippkgs in there. What /ResetSkipPkgs does is that it clears all options to skip loading added to VSPackages by users wishing to avoid loading problem VSPackages, and then starts Visual Studio. The presence of a SkipLoading tag disables the loading of a VSPackage; clearing the tag re-enables the loading of the VSPackage.

If this doesn't work, then reinstall the visual studio again.