Click on Tools menu, select Options, expand Source Control, (Select Visual Studio Team Foundation Server), and click on the Configure User Tools button. Click the Add button. Enter the following options for Compare: Extension: .* Operation: Compare Command: C:\Program Files(86)\Beyond Compare 4\BComp.exe (replace with the proper path for your machine, including version number) Arguments: %1 %2 … More Configuring Visual Studio to use Beyond Compare for comparing and merging