LocalHost FiveM Help: I don't understand stuff like this

[Dr_Wildcat]

GTA V version? latest
Up to date? Yes
Legit or Pirate copy? Legitimate
Steam/CD/Social Club? Steam & Social Club
Windows version? Yes, Windows 10
Did you try to delete caches.xml and try again? Yes
Error screenshot (if any) Yes I will post 2
System specifications 64 bit. OS
What did you do to get this issue? Created a server and tried to get a LocalHost Fixed up.
What server did you get this issue on? My Server.

Did you try to disable/uninstall your Anti-virus? Yes

Its self explanatory. If you need any into just tell me. I have tried to go onto my Xfinity Port Forwarding and I dont understand any of it. I just need help connecting to the server. I dont know what to put in the Connection Failed either for LocalHost.
cmd|665x369

[Dr_Wildcat]

[Painwithin]

you dont need to port forward for localhost… if its on the same system try disabling your virus scanner.

[Dr_Wildcat]

Ok I’ll try that. Ill respond back if it doesn’t work

[Dr_Wildcat]

Well, I disabled my Anti-Virus, and Deactivated my Xfinity Port Forward. I also erased what was in my LocalHost Port too it didn’t work, and if I put “30120” in it within settings, still says Failed to Handshake Server.