Unable to download iTunes 11.1.4 How do I get iTunes to download?

Have been unable to download iTunes 11.1.4. Get a pop-up stating that "Apple Mobile Device (Applre Mobile Device) failed to start. Verify that you have sufficient privileges to start system services".

Attempted download followed by message that iTunes was not installed correctly. "Please reinstall iTunes Error 7 (Windows error 126)".

Clicking on iTunes icon results in pop-up stating that application failed to start because MSVCR80.dll was not found.