JoinFS for FS2024
Dedicated JoinFS version for Microsoft Flight Simulator 2024
JoinFS for FS2020
Dedicated JoinFS version for Microsoft Flight Simulator 2020
JoinFS for FSX
JoinFS version for Microsoft Flight Simulator X
JoinFS for Prepar3D
Dedicated JoinFS version for Prepar3D.
JoinFS for X-Plane
Dedicated JoinFS version for X-Plane
JoinFS for FSX:SE
JoinFS version for Flight Simulator X Steam Edition
JoinFS v25.9 - 31/12/25
Bug Fixes
- Fixed an issue where JoinFS would crash when an external web-service was not available.
- Fixed an issue where JoinFS would freeze when trying to open the “Substitute…” window from the “Airplanes” window
- Fixed the XPLANE installer. Thank you to all the people who contributed to the testing of and gave solutions for the XPLANE variant.
JoinFS v25.8 - 20/12/25
The JoinFS versioning system changes to a timeline versioning scheme. The version number is now in the format YEAR.SEQUENCE.0. In some places the trailing .0 is ignored.
The JoinFS project now targets .NET 8.0 for all variants.
The solution file was reorganized.
- A single project builds all the variants, for their corrsponding architecture.
- The project file was simplified to use SDK-style project format.
- The build process was simplified using MSBuild properties and targets.
- The output folder structure was simplified.
- A single installer project builds all the installers.
- A CI/CD pipeline was introduced to use the new build process.
- An automated workflow checks code quality and security features.
- A testing framework was introduced to automate unit and integration tests.
A new model matching algorithm was introduced to improve the accuracy of model matching across different simulators. The new model matching algorithm uses a combination of model name, livery, and other metadata to identify models more accurately. This new model matching is described in more detail in its wiki page.
Bug Fixes
- Replaced the random number generator with a cryptographically secure random number generator.
- Fixed an issue where in MSFS2024 shared cockpit the entered aircraft would bank sharply to the right.
Limitations
The FSX and P3D variants are built for the x86 (32bit) architecture. Since the Microsoft.ML package does not currently offer a x86 variant, the AI-enchanced model matching is not included for FSX or P3D.
Fly Online Together with JoinFS
JoinFS lets you fly online together in shared sessions with friends and communities. It’s built for group flights, easy coordination, and reliable connections — so you can focus on flying, not setup.
One Multiplayer Solution for Multiple Flight Simulators
With JoinFS, pilots can meet in the same session and enjoy a consistent multiplayer flight simulation experience. It’s ideal for virtual airlines, events, formation flying, and casual flights where staying together matters.
Cross-Simulator Flying
A key advantage of JoinFS is that it can support online flying together even when pilots use different flight simulators. That means communities don’t have to split up — everyone can join the same group flight and stay connected.
Why Choose JoinFS
JoinFS is designed to make online group flights simple and dependable. Whether you’re hosting a public event or flying with a small group, it provides the tools to connect quickly and keep sessions stable.
Key Features
– Fly online together with friends and communities
– Support for cross-simulator multiplayer sessions
– Great for group flights, events, and virtual airline operations
– Lightweight design and straightforward setup
– Reliable connectivity for short hops or long-haul flights
Perfect for Communities and Events
From weekly club flights to large online gatherings, JoinFS helps organizers keep pilots in one place. Create a session, share the details, and let everyone join — even if they’re on different sim platforms.
Use Cases
– Virtual airline group operations
– Community fly-ins and public events
– Formation flying and shared training sessions
– Casual multiplayer flights with friends
– Cross-simulator meetups for mixed groups
Get Started with JoinFS
Choose your simulator on this page, download JoinFS, install it, and launch the app to join a session. If your firewall requests permission, allow it so JoinFS can connect properly for online multiplayer.
Need Help?
If you need support with setup or connectivity, contact us with your simulator name, operating system version, and a short description of the issue. Adding screenshots or logs can speed up troubleshooting.