Ensure that the Virtual Appliance has access to the windows endpoint. See the network requirements here: Scanning: Network pre-requisites
TIP: Ensure appropriate “exclusion” rules are allowed on the Firewalls/ ACLs to prevent blocking of the communication on the network.
Ensure that the correct credentials are available for the Virtual appliance to scan the windows endpoint. Step 4: Collect Credentials
TIP: Ensure no endpoint firewalls are preventing access to required ports and services on the Windows endpoint (SMB, WMI, RPC, Remote Registry). Use GPO to push updates to the windows endpoint with exclusions for the virtual appliance IP address.
TIP: The performance scripts running on the device may trip Anti-virus alerts.
Notify the security team of the scan.
Also potentially exclude vbscript (name) in c:\WINDOWS\temp\perfmetrics\tools.