The Pulse Secure Desktop Client for Windows relies on the Windows OS service “Base Filtering Engine” (BFE) in order to function. If the BFE service is disabled, the Pulse Desktop Client operation can fail with the error message:
Failed to setup virtual adaptor. Error 1205
The above message is generic, but the debuglog.log will provide more clarity on the problem with the following messages:
'TM' FwpmEngineOpen0 failed with error 1753. Wait for BFE to start