title: Certificate problem - Error Importing Key "object already exists" after Windows 7 upgrade
body: <p>I have about 60 .pfx files for all major assemblies for a project. They are unique files, but I use the same password for all.</p>
  
  <p>After an upgrade from Windows Vista to Windows 7 I get an Import Key File dialog requesting the password for them when I click Build in Visual Studio 2008.</p>
  
  <p>This would have been fine, but after inserting the password I get an error dialog: Error Importing Key - Object Already Exists.</p>
  
  <p>Any ideas?</p>