VPN error 806: GRE protocol 47 blocked, and why PPTP should be retired
Error 806 means GRE protocol 47 is filtered along the path. Allow GRE as a stopgap, then retire PPTP for IKEv2 or SSTP on a supported VPN server.
Kaspersky VPN Secure Connection error 628: tunnel drops after the daily limit
Kaspersky VPN error 628 means the tunnel was terminated before it opened, or the free daily cap is spent. Read the cause and the working fix.