

Tray-bar VPN menu bug – Windows 10 seems to have a weird recurring but that sometimes breaks the VPN functionality, but only from the tray-bar icon.In this case, you should be able to resolve the issue by doing a complete TCP/IP reset via an elevated Command Prompt.

This is typically common with ISPs that offer dynamic IPs. Inconsistent TCP/IP values – It’s possible that the issues with your built-in VPN are actually caused by your TCP/IP configuration.
