1. Download and install WinRAR.$ j+ S0 z8 q1 C; w/ H: J
2. Right-click the iTunesSetup.exe icon and choose "Open with WinRAR". ; q% V" a6 ~+ R' B$ D$ G7 U7 x' O3. Once the EXE is opened in WinRAR, double-click AppleApplicationSupport.msi and when the installer window is open choose "Repair". 5 `0 `! o8 q4 Y7 o4. Done! You can now run iTunes normally