Network timeouts or packet drops with VMware tools 11.x installed and SEP

Products

• Endpoint Protection

Issue/Introduction

Network timeouts or packet drops with VMware tools 11.x installed and the Symantec Endpoint Protection (SEP) client.  Other symptoms include Nslookup or Ping failures.

Environment

• Windows server
• Vmware virtual machine with VMware tools 11.x with Guest introspection driver

Cause

• Non Symantec issue
• Packet drop is seen due to intermittent failure reported by the Microsoft WFP packet injection API.
• VM is using VMware tools 11.x with Network Introspection driver (vnetWFP.sys) installed.

Resolution

This is not a Symantec Endpoint Protection issue. This issue is documented and fixed with VMware Tools 11.2.6 or newer.

Please see the following VMware KB: Network timeouts or packet drops with VMware Tools 11.x with Guest Introspection Driver (79185) for more details.