Check REX Atmos compatibility with MSFS 2024, including the required PC build, console limits, upgrade caveats and connection fixes.
Yes. REX Atmos is compatible with Microsoft Flight Simulator 2024 on Windows PC, but only when you use an Atmos release explicitly marked for MSFS 2024, including the 2024-focused Atmos CORE generation. An older MSFS 2020-only build is not automatically compatible, and the external REX program cannot run on console editions.
Which REX Atmos version works with MSFS 2024?
Use a REX Atmos build whose installer or product description specifically names Microsoft Flight Simulator 2024. Atmos CORE was developed around MSFS 2024 integration; our overview of Atmos CORE and its simulator integration explains what distinguishes it from the earlier product generation.
The distinction matters because Atmos is an externally connected utility, not a simple aircraft repaint or scenery package. Changes to the simulator interface can prevent an MSFS 2020-only release from detecting or controlling MSFS 2024, even if its files still install.
| Simulator and Atmos combination | Compatibility |
|---|---|
| MSFS 2024 on PC with an Atmos build marked for MSFS 2024 | Supported |
| MSFS 2024 on PC with an MSFS 2020-only Atmos build | Do not assume compatibility; update or upgrade to the appropriate release |
| MSFS 2024 on Xbox Series X|S, PS5 or PS5 Pro | Not supported; consoles cannot run the external Windows application |
Can existing REX Atmos owners use their old installation?
An existing REX Atmos licence does not by itself prove that the installed build supports MSFS 2024. Check the exact product name, simulator selection and update status in the REX installer or account application; access to a newer release may depend on the licence or upgrade entitlement.
A mistake we see constantly is copying an old Community folder into the new simulator and expecting every utility to migrate with it. Atmos may rely on an external program, connector and supporting simulator content, so use its supplied installer instead. Our explanation of why complex MSFS 2020 add-ons need explicit MSFS 2024 support covers this distinction in more detail.
How do I install REX Atmos for MSFS 2024?
The reliable method is to install the MSFS 2024-compatible release cleanly rather than placing files from an older Atmos installation into the new simulator.
- Confirm the edition. Make sure the downloaded installer explicitly offers Microsoft Flight Simulator 2024 support.
- Update both programs. Complete pending Microsoft Flight Simulator and REX application updates before testing the connection.
- Avoid duplicate installations. Do not run an old Atmos executable and Atmos CORE together; stale connectors can make the correct release appear broken.
- Use the supplied installer. Let it place any required connector or simulator package instead of manually guessing a destination inside
Community. - Test in a loaded flight. Allow the aircraft, scenery and weather system to finish loading before deciding that Atmos has failed to detect the simulator.
For the full process, follow our version-specific REX Atmos installation guidance.
Why is a compatible REX Atmos build not connecting?
Compatibility does not guarantee that an outdated or damaged installation will connect correctly. The usual causes are an MSFS 2020-only executable, an incomplete REX update, two Atmos versions running together, stale installation paths, blocked permissions or testing before a flight has fully loaded.
- Verify that Atmos identifies the simulator as Microsoft Flight Simulator 2024, not merely Microsoft Flight Simulator.
- Restart the simulator and REX utility after either one updates.
- Check that security software has not quarantined or blocked the external application or its connector.
- Remove obsolete Atmos components only after confirming that the MSFS 2024-compatible installer is available to your licence.
- Do not troubleshoot an Xbox or PlayStation installation; REX Atmos requires the Windows PC edition.
If the correct build still reports that the simulator is missing or fails to apply changes, work through our focused REX Atmos connection and detection fixes.