App Control: Agent Upgrades Failing with Error "Failed to Download Upgrade Package - Invalid File Format"

App Control: Agent Upgrades Failing with Error "Failed to Download Upgrade Package - Invalid File Format"

Environment

  • App Control Agent: 8.1.0.3546 (Patch 2) and Higher

Symptoms

When upgrading agents through the web console the following error is seen on the computer details page:
Agent upgrade: Failed to download upgrade package: https://CBSERVER/hostpkg/pkg.php?pkg=/ParityHostAgent.msi. Invalid file format.
This error happened 48 time(s)

Cause

When an agent is in Disabled mode and an upgrade is pushed from the console the agent fails to validate the "ParityHostAgent.msi" package.

Resolution

  1. Move the agents to a different policy (e.g. Visibility or Low enforcement)
  2. Upgrade to 8.1.8 agent. 
    • In versions 8.1.8 and higher, agents can be upgraded from disabled mode

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Creation Date:
‎09-09-2020
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757
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