When you are installing and uninstalling programs, there is a chance for settings to be corrupt and cause your computer not to function correctly. I ran into this problem when trying to install iTunes. It would be the error message, “An error occurred during the installation of assembly component”, and then followed by what could be causing it. I thought it would be an installation issue, so I thought to restart the Windows Installer service, but that didn’t fix the problem. I found a solution online that used the command prompt to execute a command to solve the problem.
The fix is related to the following link: http://technet.microsoft.com/en-us/library/ff621564(v=ws.10).aspx
Now to execute the fix, I ran the command prompt as an administrator and typed the following line:
Fsutil resource setautoreset true C:
After pressing enter, and successfully executing the command, I was able to install my applications and iTunes normally.