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SnapCenter Plug-in for Windows Install or upgrade fails with DCOM errors due to CVE-2021-26414

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Applies to

  • SnapCenter Server
  • SnapCenter Plug-in for Windows
  • CVE-2021-26414
  • Microsoft KB 5004442

Issue

  • Snapcenter Plug-in for Windows upgrade fails with the following error message(event ID 10036) in host event logs

Microsoft-Windows-DistributedCOM
10036
The server-side authentication level policy does not allow the user snapcenter\user SID <SID> from address <IP> to activate DCOM server. Please raise the activation authentication level at least to RPC_C_AUTHN_LEVEL_PKT_INTEGRITY in client application.

  • SnapCenter flags this as a permissions issue in SnapManagerWeb.log

Plug-in modification validations failed. Error: The host <hostname> is not accessible with the specified credentials. You must ensure that the following conditions are met: The credential has administrator privileges for the plug-in host. Elevated privileges are required for local user accounts. The required ports are open between SnapCenter Server and the plug-in host if the firewall is enabled. For more information on ports, see SnapCenter Installation and Setup Guide.

 

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