1. Download and install WinRAR. 7 u3 [- E6 J. |% A2 a ~2. Right-click the iTunesSetup.exe icon and choose "Open with WinRAR". ; \. Y3 L* D- v" F3. Once the EXE is opened in WinRAR, double-click AppleApplicationSupport.msi and when the installer window is open choose "Repair". - N K9 c, N" h9 I4. Done! You can now run iTunes normally