iTunes install error: microsoft.vc80.crt,version="8.0.50727.4053"

Hi  JenPea78,

Thank you for replying.

Let’s browse to the location c:\windows\winsxs folder and rename the folder winsxs to winsxs.old.

Then try installing the security update and check if it helps.

Hope the information helps. Please post back and let us know.
Regards
Debleena S
Microsoft Answers Support Engineer
Visit our Microsoft Answers Feedback Forum and let us know what you think.

Hi  JenPea78 ,

As I find you need to install the security update’ Microsoft Visual C++ 2005 Service Pack 1 Redistributable Package ATL Security Update’ before installing iTunes on your computer.

Let’s follow these steps before you proceed with the installation of ITunes.

1. Download and install:

Microsoft Visual C++ 2005 Service Pack 1 Redistributable Package ATL Security Update

http://www.microsoft.com/downloads/details.aspx?familyid=766a6af7-ec73-40ff-b072-9112bab119c2&displaylang=en#filelist

2. Also, make sure that you have iTunes installer installed on your computer or else download and install it.

3. Uninstall all iTunes software from Program and features.

a)Open Programs and Features by clicking the Start button , clicking Control Panel, clicking Programs, and then clicking Programs and  Features.

b)Select  the program, and then click Uninstall.

Uninstall or change a program

http://windows.microsoft.com/en-us/windows-vista/Uninstall-or-change-a-program

Also, download and install the Windows Installer Cleanup utility to remove all iTunes software:

Description of the Windows Installer Cleanup Utility

Now run the utility ("Start > All programs > Windows Install Cleanup"). In the list of programs that appear in Cleanup, select any iTunes entries, and click remove. Quit out of Cleanup.

4.Reinstall all  iTunes software and check if it works.

Removing and reinstalling iTunes, QuickTime, and other software components for Windows Vista or Windows 7
http://support.apple.com/kb/HT1923

For more information refer this link:
http://discussions.apple.com/thread.jspa?threadID=2217499&tstart=0

Trouble installing iTunes or QuickTime for Windows
http://support.apple.com/kb/HT1926

Hope the information helps. Please post back and let us know.

Regards
Debleena S
Microsoft Answers Support Engineer
Visit our Microsoft Answers Feedback Forum and let us know what you think.