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Product is already installed (when installing a VirusScan Enterprise 8.8 full package that includes a patch)
Technical Articles ID:   KB89349
Last Modified:  5/17/2017


McAfee VirusScan Enterprise 8.8.x (VSE)

For details of VSE supported environments, see KB51111.


Upgrade of VSE 8.8 to a later VSE 8.8 patch fails when using a full VSE 8.8 installation package that includes a later integrated patch.

The following error is seen whether installing locally or via an ePolicy Orchestrator (ePO) deployment task:
Another version of this product is already installed. Installation of this version cannot continue.
To configure or remove the existing version of this product, use Add/Remove Programs on the Control Panel.




When a new VSE 8.8 patch is released, the following postings occur at the Product Download Site:
  • Patch-Only package
  • VSE 8.8 full package which includes a matching integrated patch
When VSE is already installed, only the patch-only package can be used to upgrade the client. A full VSE 8.8 + Patch installation package will not upgrade/patch an existing VSE installation. Full packages with an integrated patch will not upgrade an existing installation of VSE. The error reported above is informing the user of that fact.


For systems that have VSE already installed with or without a VSE 8.8 patch, download the VSE 8.8 patch-only package from the downloads site to allow the system to successfully upgrade.

Examples of the different names each package has:
  • Full VSE with Patch package -  VSE880LMLRPx.ZIP
  • Patch-only package - VSE880Px.ZIP

    Where 'x' refers to the patch number.
McAfee product software, upgrades, maintenance releases, and documentation are available from the Product Downloads site at: http://www.mcafee.com/us/downloads/downloads.aspx.

NOTE: You need a valid Grant Number for access. KB56057 provides additional information about the Product Downloads site, and alternate locations for some products.

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