1. Download and install WinRAR. O4 r) B. y$ L! `2. Right-click the iTunesSetup.exe icon and choose "Open with WinRAR". - ?; m* Q; ^3 f9 V% Y4 l3. Once the EXE is opened in WinRAR, double-click AppleApplicationSupport.msi and when the installer window is open choose "Repair". 9 y# e4 D; B0 W P. r- @4. Done! You can now run iTunes normally