error 1721 windows installer a program required for this install to complete could not be run

I have an operating system of Windows Vista Basic 32 bit on my laptop.  When I tried to install itunes this error message 1721 arrives.  Since I tried to install new hardware on the printer and it would not have worked either.  Any suggestions on how to solve this problem.  Thank you.

Hello

Thanks for the update and try the initial suggestions. This lets us know that Windows Installer is installed corectly, but we probably a blocked program installation.

Looking for a registry key "Iin Progress:

Warning: You should only edit these registry entries if you really know what you're doing. Back up your hard drive first.

a. the empty registry key "InProgress".
 
Check the following registry key:

HKLM\Software\Microsoft\Windows\CurrentVersion\Installer\InProgress

and clean all the entries that you find.
 
b. empty/rename "PendingFileRenameOperations" registry key:
 
Check the following registry key:

HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\PendingFileRenameOperations

and clean all the entries that you find.

Here's what I'd like to try then. The Windows Installer Cleanup utility is used to remove any stuborn programs. Perhaps that we have either an installation program failure, who left the installer of Windows in a "current state", to iTunes or another program has been partially installed and needs to have these deleted remnents before we can move forward with a new facility.

290301 - description of the Windows Installer CleanUp utility:
http://support.Microsoft.com/default...b;en-us;290301

I would like to know if one of these help.

Mark <> Microsoft Partner

Tags: Windows

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