Those who like to lớn play the originalLeft 4 Deadwith their friends locally, ergo without an Internetconnection, may also want lớn play the sequelLeft 4 Dead 2on a local area network (LAN) as well. I"ve sầu created a guide on how to lớn host and join a local game session without relying on Steam or any other onlinegame matchmakers.

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Almost two years have passed since I created this guide & a lot of game updates have sầu been pushed through by Valve since then. As a possible fix to lớn recent multiplayer connection problems, create a shortcut for Left 4 Dead 2.
Open the shortcut’s properties, proceed to Shortcut tab và add the following at the over of the Target field:–insecure. Cliông xã Apply/OK to lớn save the new setting.
Every time you run Left 4 Dead 2, you should bởi so by using this modified shortcut.The guide below will not work if you don’t use the shortcut.After following the steps above sầu, run the game. You will then need khổng lồ enable the developer console. Optionally, you can also enable automatic detection of LAN games for convenience khổng lồ those who will join your hosted game. Here"s how:
How to lớn enable Developer Console:
1. At the game main menu, clickOptions.2. ClickKeyboard/Mouse.3. ClickAllow Developer Console& selectEnabled.

How to lớn automatically detect LAN games:
1. At the game main thực đơn, clickOptions.2. ClickMultiplayer.3. ClickAutomatically Discover LAN Games& selectEnabled.With all the necessary settings phối up, it"s now time lớn host a game.How lớn create or host a Left 4 Dead 2 local (LAN) game:1. mở cửa the Developer Console by pressing`on your keyboard. (It is the key below Esc.)2. Typesv_lan 1then press Enter.3. Typesv_allow_lobby_connect_only 0then press Enter.4. In the console, typemapthen press Space.5. Right after you press Space all the playable maps will be displayed.6. Use your keyboard arrows khổng lồ scroll to lớn your desired maps.7. Press Enter.Basically the commvà to lớn create a local game is this:bản đồ nameOfMapHere gameTypeAn example of a map is thisc5m1_waterfront.c5stands for chiến dịch five,m1for chapter/bản đồ one, andwaterfrontthe corresponding name. Those with The Passing chiến dịch, the chiến dịch code assignment isc6.List of all Left 4 Dead 2 maps:Dead Center:c1m1_khách sạn c1m2_streetsc1m3_mall c1m4_atriumThe Passing:c6m1_riverbank c6m2_bedlam c6m1_portDark Carnival:c2m1_highway c2m2_fairgrounds c2m3_coasterc2m4_barns c2m5_concertSwamp Fever:c3m1_plankcountry c3m2_swampc3m3_shantytown c3m4_plantationHard Rain:c4m1_milltown_a c4m2_sugarmill_a c4m3_sugarmill_bc4m4_milltown_b c4m5_milltown_escapeThe Parish:c5m1_waterfront c5m2_park c5m3_cemeteryc5m4_quarter c5m5_bridgeList of all game modes:chiến dịch scavenge realismsurvival versus mutationIf thegameTypeis left blank, the hosted game will default to lớn acampaigngame with normal difficulty. To choose another mode, just type in the console the game mode after the bản đồ name.Example:maps c1m4_atrium realismHow khổng lồ join a LAN game:When the game is created, the remaining thing lớn bởi vì is to lớn let other players join the game. IfAutomatically Discover LAN Gamesis enabled,Steam Group Serversmay appear in the main menu which players can use lớn join your game.Alternately, the console comm& to lớn join isconnect hostIPAdresshere.Example:connect
Steam Group Servers (at the bottom center) appears when it detects a game.Cliông chồng image to lớn enlarge.
When clicked, you will then proceed khổng lồ this window that lists all available games.Cliông chồng image khổng lồ enlarge.
Determining the host"s IP.. address:
Determining your local IP address can be tricky when you"re connectedto the Internet, so it"s best to lớn stay offline when hosting a game. Anyway, the game host must typenet_statusin the developer console. Some data will appear afterwards. You will need lớn look for a phrase similar khổng lồ this:"Net status for host"The numbers that appear on that phrase is the host"s IP address.Other notes & info:This offline LAN game guide does not require Hamachi, Garena, or Steam. However, I suppose the version of the game installedon all computers must be the same.Make sure Left 4 Dead 2 is added lớn the firewall exemption.sv_allow_lobby_connect_onlyIf mix, players may only join this hệ thống from matchmaking lobby, & may not connect directly.sv_lan ( def. "0" )If mix, server is a lan hệ thống ( no heartbeat, no authentication, no non-class C addresses).Left 4 Dead Play on LAN (Offline)Source

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this works perfectly, thanks dude!

October 25, 2012 at 9:26 AM


helloim using - Left 4 Dead 2 version've sầu followed you stepsbut it doesn't work for mewhen my friends tried to connectit is stuchồng on the loading pageand then pop-up"failed to connect after 10 retries"

October 27, 2012 at 7:30 AM

It only display unable to lớn exedễ thương command (86) when I try to lớn add -insecure lớn the shortcut

March 31, 2013 at 2:14 AM

if you failed to lớn connect after 10 retries, try disable your firewall or make your dns automatic..

May 16, 2013 at 4:52 AM

A misprint in 'exception'>> Make sure Left 4 Dead 2 is added to the firewall exemption.

June 17, 2013 at 12:09 AM

Though they could never beat Capcom's Resident Evil Series, Valve corporation did gave sầu them some competition with their Left 4 Dead và Left 4 Dead 2 for sure. The first installment of this franchise was really awesome.Thank you for your hard work... All the best!

June 23, năm trước at 6:05 AM

when i try creating a game. it says connection blocked Please remove plug-ins before attempting to lớn connect lớn a VAC secure VPS."

July 24, năm trước at 5:55 AM
Kristofor Jensensaid...

Works great! We have 3 licenses in the family & a crappy internet connection...it's easier for 3 of us to connect locally to lớn have a lag miễn phí game this way!

October 11, năm trước at 11:45 AM

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Awesome Admin Thanks For sharing This Article............ Now I know how lớn play

October 13, năm trước at 5:06 AM

hi guys, i have problem, I want khổng lồ play that game on lan with my friover, but when he add -insecure into target and launch game, it shows hyên please remove insecure :/ vì you know where the problem is? thanks

October 13, 2014 at 9:08 AM

Awesome guide man!!! I honestly installed the game to lớn play in lan, i was kinda disappointed to see that i couldn't... But then i found this perfect guide! Thanks!Just one last question, how can i change difficulty or character? Thanks again :)

November 22, năm trước at 4:09 AM

i have sầu problem..does anyone knows how khổng lồ play offline mode but LAN and WIFI connections??(2 players) thankss

December 13, 2014 at 3:19 AM

does anyone know how to lớn play offline or thiết lập but 2 players only(1 lan và 1 via wifi connection) thanks

December 13, 2014 at 3:23 AM

Great, this worked a treat. Thank you from me và the rest of my lan buổi tiệc nhỏ :).

June 14, 2015 at 5:50 AM

My friend can join me by using this method although we use different wifi ?

October 14, năm ngoái at 8:31 AM

Does the people joining need to create the shortcut too?

September 6, 2016 at 8:48 AM

Can anyone please guide me on how lớn play addon campaigns with my friends on lan/ host an addon campaign cause there's no console command lớn launch an addon chiến dịch of course, & also when I try khổng lồ change the current campaign the "Addon Campaigns" option is blurred, I can't select it. I've seen many online non steam servers that are hosting addon campaigns too. Idk how to? Help would be highly appreciated.

March 23, 2017 at 9:35 AM

I'm super late but you would type the bản đồ name into the console lượt thích so: "map (bản đồ name here) campaign"

September 30, 2018 at 5:16 AM

Remove sầu -insecure from the launch options. It prevents you from joining servers.

September 30, 2018 at 5:18 AM

Remove sầu -insecure, your plugins don't work on a server that isn't yours.

September 30, 2018 at 5:đôi mươi AM

Don't put the -insecure commvà in. Your plugins won't work on your friend's VPS.

September 30, 2018 at 5:21 AM

Hey bro can you tell if this work with pirated version of the game?