Symantec Endpoint Protection (SEP) 11.0.7 client, Network Threat Protection (NTP) shows malfunction, HI check fail.
SEP client log shows "Firewall driver failed to open network adapter"
The presence of the Teefer2 key:
This key was created by a previous install of a older SEP version, while SEP 11.0.7 will use Teefer3 as the firewall driver.
1. Backup the registry.
2. Delete the key
3. Uninstall SEP client. Recommended to use Cleanwipe for this issue.
4. Re-install the SEP11.0.7 client.
Symantec Endpoint Protection (SEP) 11.0.7