From https://discussions.apple.com/docs/DOC-3551 to security systems (antivirus) I am left with no clear answer. Try prior answers and then an Apple forum.
I keep getting an error when I try to download Icloud for windows that says : Error 1721. There is a problem with this Windows Installer package. A program required for this install to complete could not be run. Contact your support or package vendor--
I tried all the suggestions I could find but so far nothing seems to be wrong with the installer. I there anything I can try to fix this error ?

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