Follow simple steps to fix corrupted WinRAR file
Step 1: After downloading and installation of tool is finished, launch its Home Screen as shown in figure a.
Figure a: Home Screen
Step 2: Using browse button select the corrupted WinRAR file as shown in figure b.
Figure b: Select Corrupted File
Step 3: Choose the desired location, where you wish to save the repaired WinRAR file and later click on "Save" option as shown in figure