To undo another user’s lock. Click Start, click All Programs, click Microsoft Visual Studio 2008, click Visual Studio Tools, and then click Visual Studio Command Prompt. Type the following command and replace the arguments with the appropriate parameter information for your needs.

Solution:

Open Visual Studio 2013/15 command prompt like below image

tf undo $/path/ABS.Models.csproj /workspace:SHASHANGKA;shashangka