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Cisco Bug: CSCsz67981 - MSI-based upgrade from CCA Agent 4.1.3 to 4.1.8 requires uninstall

Last Modified

Feb 22, 2014

Products (1)

  • Cisco NAC Appliance (Clean Access)

Known Affected Releases


Description (partial)


Attempts to upgrade MSI-based Cisco Clean Access (CCA) Agents (that is, agents provided either
manually or via policy-based install rather than downloaded from the Server or Manager directly)
fails, producing an error of :

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.

This occurs even if the installation file is properly renamed to CCAAgent.msi prior to installation of
either 4.1.3 or 4.1.8 code (this renaming is a required step).


Issue does not affect agent upgrade when the Agent is downloaded directly from the Server or

Possible other combinations are affected - only 4.1.3 to 4.1.8 was tested.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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