I try to enable firewall (Plesk->Server->IP Addresses->Firewall), but the message appears: "winfwmng failed: Object reference no

The problem is caused by IEEE1394 network
adapter. At the moment, Plesk Firewall does not support adapters of
such type. To exclude described error you can perform the following:

  1. Disable IEEE1394 network adapter.
  2. Remove TCP/IP from IEEE1394 adapter.
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