Hosting a Session

Setting up sessions for other pilots to join

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When you host a Multiplayer session, you set the location, weather, and other options that all the other pilots will experience in flight. You can host your session on a Local Area Network and other players on that network can join.

To learn more about connecting using a Local Area Network, see Multiplayer on a Local Area Network.

As host, you can either fly as a pilot or act as an air traffic controller for the other pilots who join your session. Other players who join your session can also choose whether to fly or direct air traffic.


How To Create Multiplayer Session

To Host a Multiplayer Standard Scenario Session

  1. Open Multiplayer. You will be on the Multiplayer Login Screen.
  2. Enter a User Name. This will be the name that player's will see you as when joining and hosting LAN Sessions.
  3. Click Sign In. (NOTE: This may take a few moments while the system broadcasts that you are now signed in and also searches for available sessions.)
  4. You will be in the Distributed Simulation Session Selection Lobby. From here click Host Session.
  5. Fill in the Basic Options tab and Additional Options tab (optional) on the Create Session screen, and then click OK.
  6. Choose the Scenario Options, then click OK.
  7. You are now in the final distributed simulation session lobby. From here you can choose to fly now, wait for incoming players, or change your scenario options before the session starts. By pressing Fly Now the session commences.

To Host a Multiplayer Structured Scenario Session

  1. Open Multiplayer. You will be on the Multiplayer Login Screen.
  2. Enter a User Name. This will be the name that player's will see you as when joining and hosting LAN Sessions.
  3. Click Sign In. (NOTE: This may take a few moments while the system broadcasts that you are now signed in and also searches for available sessions.)
  4. You will be in the Distributed Simulation Session Selection Lobby. From here click Host Session.
  5. Fill in the Basic Options tab on the Create Session screen, and then click OK.
  6. Choose the multiplayer scenario that you would like to fly and press Accept. (NOTE: You must have a multiplayer scenario in order to create a multiplayer scenario type session.)
  7. Accept the briefing.
  8. Choose the Structured Scenario Options, then click OK.
  9. You are now in the final distributed simulation session lobby. From here you can choose to fly now, wait for incoming players, or change your flight options before the session starts. By pressing Fly Now the session commences.

Basic Session Options

As host, you can provide detailed information about your session. See the table below to understand the fields on the Basic Options tab.

Option Description
Room Name Provides an easy way for players on the network to find your session in the lobby list.
Room password Protects your session so that only players who know the password can join (optional).
Session type Standard Scenario: host a session flying anywhere in any aircraft.
Structured Scenario: host a structured experience in a specific location.
Current Scenario (SimOperator only): host a session based on the currently loaded scenario.
Room Visibility

You can decide whether you want your room visible to everyone who might be looking for a session to join over the network. If you want a private session with only friends, you can make the room invisible to others.

To make your room visible

  1. Under Room Settings, select the Public checkbox.
  2. Click OK.

To make your room invisible

  1. Under Room Settings, select the Private checkbox.
  2. Click OK.
Additional Players

The more players that join your session, the more network bandwidth is required. The maximum number of players in a session depends on the speed and capacity of your Internet or LAN connection. Under optimal conditions (for example, a high-bandwidth, single-subnet LAN) you might be able to host more than 32 players. You can usually expect 16-32 players to join a session and still have good performance. You can restrict the number of players in your session.

You can also make the session available to anyone but reserve slots for friends. When you reserve slots, only players in your Friends list can occupy them. Even if your friends don't fill all of the reserved slots, the number of other players who can join is limited to the Maximum players minus the reserved slots.

You can also set a time limit until the session starts.

To set player restrictions

  • Type a number between 1 and 63 in the Additional Players box.
Room Description Provides any additional information you want to give about the session (optional).
Minutes until
session starts
Type a number between 0 and 100 in the Minutes until session starts box to determine the amount of time the session will automatically launch in (optional). If the value is 0 the host determines when to start the simulation.
Enable Voice Communication

If you and your players have a Windows-compatible headset (or a microphone and speakers) and want to use voice communications, enable this option. A broadband Internet connection is required for voice communication.

IMPORTANT: There are a couple of things to know if you're going to use a headset. For the most realism, you want only voice communication coming through the headset.

  • If your headset is your only audio output, all sounds will come through the headset, including engine noise, wheels on pavement, and even e-mail notifications if you have your e-mail program running.
  • You must have two or more audio devices (sound cards) in your computer to enable voice-only audio through your headset.

To learn more about voice-only audio through a headset, see Changing Sound Settings.

Always activated for all players All players in the session can hear all other players. Players must press and hold CAPS LOCK to talk.
Only activated using aircraft radios Players wishing to talk to each other must tune to the same radio frequency, and then press and hold CAPS LOCK to talk. Press and hold SHIFT+CAPS LOCK to broadcast to all players, regardless of whether they're on the same radio frequency.

Additional Options (Standard Scenarios)

As a Multiplayer session host, there are a number of options you can set to determine what other players are allowed to do in your session.

When a player is changing aircraft, location, and other settings during a Multiplayer session, the session continues. That means that everyone else is probably flying away from that player while they're changing settings.

That might be fine when the intent of your session is not to stay together. For example, if all the players are practicing landings at a particular airport, no one is going to get lost from your group of players while changing aircraft or settings. Or if you're acting as a Multiplayer air traffic controller, you likely don't care where anyone is in the sky when you're not controlling them.

Under these conditions, you probably want to give players as much freedom to change settings as possible.

If, however, you are flying with new pilots, flight instructing, racing, or formation flying, you might want to restrict players' freedom to make changes in the session to prevent players from getting lost.

See the tables below for an explanation of the various advanced options.

All of the advanced options are enabled by selecting check boxes.

To enable any option select the check box next to that option.

Player Options

Option What it does
Players can change realism settings By selecting this option, any player can change their Realism Settings at any time during your session.
Players can change location
after joining
By selecting this option, any player can change to any airport in the world at any time during your session.
Players can share aircraft By selecting this option, any player can share their aircraft with any other player during your session.
Players can use Slew mode By selecting this option, any player can use Slew mode to move their aircraft at any time during your session.
Players can join during session By selecting this option, a player can join your session after the session has started.
Players can pause their session By selecting this option, any player can pause their session by pressing P at any time.
Players can use Professional Plus features By selecting this option, a player with the Professional Plus variant of Prepar3D can use the Professional Plus features during this multiplayer session.
Otherwise, Professional Plus features will be blocked.
Host can pause session for everyone By selecting this option, the host can pause the session for all players by pressing CTRL+P at any time.

Starting Location

Option What it does
Players can start at an airport of their choice By selecting this option, any player can start at any airport in the world.
Players can start in the air near the host By selecting this option, any player can start the session in the air near the host aircraft. This is a good option if your intent is to do formation flying or racing.
Players can start at the airport nearest the host's aircraft By selecting this option, any player can start the session at the airport nearest the host aircraft. This is a good option if a player is joining your session after you're already flying.

Send Update Intervals

Option What it does
Host This option will determine the maximum amount of time that may pass between updates sent by the host.
Clients This option will determine the maximum amount of time that may pass between updates sent by the clients.
Enable high-frequency update By selecting this option, the host and all connected clients will send updates as often as they are received without exceeding send update interval values.

Sharing aircraft

A host can share control of an aircraft with another player. Whether you're new to flying or a certified flight instructor, this is a great feature to use for instruction. It's also a fun way to share secrets about Prepar3D with a friend, or learn from them!

Note: The host can share his aircraft at any time but the host cannot join another player's shared aircraft.

Additional Note: To enable shared voice communication, voice communication must first be enabled by the host.

To learn more about this feature, see Sharing an Aircraft.

Scenario Options (Standard Scenarios)

This screen is where you set the flight conditions for yourself and the other players in your session. Choose your aircraft, the weather, starting location, and other options. See the table below for links to articles about each feature on this screen.

Feature How It Works
Select role Select whether you want to be a pilot or an air traffic controller.
State intentions Type some notes to the other pilots in your session about what you intend to do in the session (optional).
Current Aircraft See Selecting an Aircraft.
ATC Name See the ATC Name section of the Selecting an Aircraft article.
Current Location See Changing Your Aircraft's Location.
Current Weather See Weather for a discussion on weather settings.
Current Time and Season See Date, Time, and Season for a discussion on date, time, and season settings.
Load Scenario See All About Scenarios.
Save Scenario See All About Scenarios.
Flight Planner See Using the Flight Planner.
Failures See Setting Up Failures for a discussion on failures settings.
Fuel and Payload See Fueling and Loading an Aircraft.

Structured Scenario Options (Structured Scenarios)

When hosting a Structured Scenario, you have several choices to make about your session and how other players participate.

Player roles

For each Structured Scenario, there are a predetermined number of default roles available to other players joining your session. As host, you can decide whether all of these roles remain available and whether to disable them.

OptionWhat It Does
Disabled Selecting this option makes the role unavailable to any players joining the session.

Scenario rules

As host, you can set certain rules for the current Scenario.

Option What It Does
Enable anti-cheat Limits allowable aircraft to those installed on both host and player computers, and verifies Object file compatibility.
Enforce host realism Settings in the host's Realism dialog box are enforced for all players.
Allow racing aids Allows players to display/hide the Race Map and Pointer during a race.
Number of laps Sets the total number of laps players must fly to win a race in this Scenario.
Time until race start Sets a time limit to wait until the session starts.

Removing Players from Multiplayer Sessions

A multiplayer host can remove any player from the session.

To remove a player from a multiplayer session

  1. If you're in a session, exit to the Final Session Lobby.
  2. Click on the player you wish to kick on the player list and then hit the Kick Player button.
  3. Confirm that you would like to remove the player from the session.
  4. Click Fly Now to rejoin the session.

Join Direct to Host

If you're hosting a multiplayer session over a LAN, your session is only visible on your subnet. There may be other players on your LAN who are on a different subnet. They can still join your session, but you must provide them with your computer's internet protocol (IP) address so they can use that to connect directly to your session.

To determine your computer's IP address

Windows 7

  1. On the Windows taskbar, click Start, then type Run into the search box and press ENTER.
  2. The Run dialog box should appear. In the Run dialog box, type cmd, and then click OK.
  3. At the command prompt, type ipconfig, then press ENTER.
  4. Make a note of the IP address.
  5. Give your IP address to the players joining your session.

Disconnecting Multiplayer

Whether you're hosting or joining, you can disconnect from a multiplayer session at any time. If the host ends the scenario, the session is closed for all players and they exit the scenario. The options to exit multiplayer can be found under Scenarios on the main menu or by pressing ESC to trigger the End Scenario dialog.

To disconnect from a multiplayer session you have two options available:

Exit Multiplayer Session

This will end your current multiplayer session and return you to the Distributed Simulation Session Selection screen. At that point you can rejoin a session or start hosting a new session.


Exit Multiplayer

This will disconnect you from multiplayer. Once disconnected, the simulation will continue as normal. At any point the multiplayer session can be relaunched following the normal procedure.