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McAfee viruscan installation

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This error message appears on the screen when installing McAfee Viruscan v4.5.1 "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 personnel or package vendor". Any solution on this particular problem.

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by thechas

What version of Windows are you installing this onto?

Since 4.5.1 is an older (no longer supported) version of McAfee, it may be incompatible with system files on your PC.

This could be because you have XP on the PC, or installed the Windows Installer 2.0 Update onto an older version of Windows.

Either situation could cause installation problems with older software.

Chas

by joseph moore

Now, AFTER the install works, please keep in mind that you need to upgrade the antivirus engine. Otherwise, you are gonna have problems with new DAT updates and the old engine.
Go here to update the Mcafee antivirus engine:
ftp://ftp.nai.com/pub/antivirus/datfiles/4.x/

You want to download the file called SDAT####.EXE The # symbols you will replace with the weekly version (today's version is SDAT4259.EXE). Each week, this version increases by one, so next week's file will be SDAT4260.EXE
anyway, download and run this file. It will upgrade the antivirus engine to 4.1.6.0, and it will also update the DAT files to the most current version.

hope this helps

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