App Control: Unable To Upgrade Agent: “Server Validation Failed, Mismatched Public Key Supplied”
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App Control: Unable To Upgrade Agent: “Server Validation Failed, Mismatched Public Key Supplied”

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Article ID: 286430

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Updated On:

Products

Carbon Black App Control (formerly Cb Protection)

Issue/Introduction

Error when attempting to upgrade Agent via Console:
Agent upgrade: Failed to download upgrade package: https://ServerAddress/hostpkg/pkg.php?pkg=/ParityHostAgent.msi. WinHttpReceiveResponse: Server validation failed, mismatched public key supplied.
This error happened 2 time(s)"

Environment

  • App Control Server: 8.8.2 and Higher
  • App Control Agent: 8.7.2 and Higher
  • Microsoft Windows: All Supported Versions

Cause

The certificate bound to the Resource Download Location (RDL) is not currently Trusted in the Trusted Communication Certificate list.

Resolution

  1. Verify the Resource Download Location (RDL) is accurate and contains the necessary files.
  2. Verify the certificate used for the RDL matches a certificate listed as Trusted in the Console > System Configuration > Security > Trusted Communication Certificates.
  3. If the certificate is already in the list:

Additional Information

  • If SSL Inspection, or some other network filtering/monitoring, is happening on Port 443 between the endpoint and the file download, this could cause difficulty in acquiring the file.
  • If the issue persists, please open a case with Support and provide the Agent Historical Logs as well as a screenshot of the full page from the Console > System Configuration > Security