No Internet in WSL
Problem: UCSF installs Symantec Endpoint protection which has a firewall that is incompatible with WSL
Solution: Change the firewall protection to use Windows Defender instead
Step-by-step from my disabling Symantec Endpoint’s firewall:
- Open Add/Remove Programs
- On Symantec Endpoint click “…” → Modify
- Click Next → Modify and you should get to “Custom Setup”
- Click the (tiny) hard drive icon next to “Network and Host Exploit Mitigation” and select “Entire Feature will be unavailable”
- “Next” multiple times to complete the install process (I opted out of helping improve their software)
- You may have to confirm that the installer should be allowed to continue
- Restart
- Once it has completed, open Start Menu → “Windows Defender Firewall” (not the one “with Advanced Security”) and confirm that the firewall is active
Screenshots:




