Hello, guys! Hope you are having a wonderful weekend and you are listening to Guns N Roses - November Rain and you are soaring the virtual skies in this wonderful simulator that we have here :))
I was searching this forum but I couldn’t find anything regarding this situation that I have with Rex Atmos Core: I am trying to install the app but everytime I do, right when it’s supposed to start copying the files on my hard drive, it asks me if I am sure I want to cancel the installation even though I don’t press any buttons whatsoever. And whatever choice I make when this pop-up comes up, the installation stops.
Anyone has any ideas why this keeps happening?
This sounds more like a Rex Atmos issue than a sim issue. Tried contacting them directly?
1 Like
No, I haven’t done that yet, I just encountered the issue and I was trying to figure out a way around it, but I will also write a ticket to Rex because you are right, it has nothing to do with the simulator. Thank you!
Did you try running the installer as an administrator?
I had a similar issue with mine. I am on SU4 Beta and the Beta test version Rex released had the issue. The original version worked fine with SU3.
However I’m not sure if that’s still the case as I won’t go back to SU3.
I do remember seeing something about this on Rex’s Discord channel.
The Beta version of Rex did work with SU4 Beta 1.6.1.90.
In the meantime I wrote a ticket on Rex Axis about this issue and they said that I have to run the installer as admin but this doesn’t seem to resolve the problem. Maybe they will investigate this further and resolve it in the next beta release or the next full release.
If I try to install the latest full release version of Rex Atmos Core, that one works, but the beta, for me, it has problems.
Anyways, thank you for the suggestions!
From Rex:
NEWS TOPIC: Atmos Core Beta SU4 - Status Update DATE ISSUED: Monday, October 27, 2025
TYPE: Company News IMPORTANT INFORMATION: Just to give a quick update about Atmos Core SU4 - our development team is aware that the current public beta version of Atmos Core is not functioning with the latest beta release of Microsoft Flight Simulator 2024. We are actively working on a resolution and expect to have a solution shortly. Please note:
-
We do not provide official support for beta versions.,
-
Updates will be shared as they become available.,
-
Using beta builds are at your own risk.,
Thank you for your understanding and patience. (edited)Monday, October 27, 2025 1:59 PM
2 Likes
All nice and dandy but the beta period has ended. We are now on final SU4.
Announcement on Rex Discord. I used the beta today with SU4 and had no problems.
NEWS TOPIC:
REX Atmos Core of SU4 Official Release News
DATE ISSUED:
Monday, December 8, 2025
TYPE:
Company News
IMPORTANT INFORMATION:
We see that Microsoft has officially released SU4 for Microsoft Flight Simulator 2024! We are currently testing REX Atmos Core internally to ensure full compatibility. If everything checks out, we plan to release the official SU4-ready version later this week. Stay tuned for updates.
Sincerely,
The REX Development Team
2 Likes
I just purchased REX Core. And according to what I’ve found on the web, a new version came out on December 29th, which should work with MSFS 2024 SU4. But unfortunately, the app crashes just upon loading. I’ve tried un- and reinstalling, but still no joy. Why is that?
1 Like
Hello, I also had a problem with launching the installer for Rex Atmos which I wrote about it previously but since the official release of the product (8.1.2025.1210) I had no problems installing and running the app on my computer.
If the version that released on December 29th is not a beta version of the app, you can write a ticket on Rex Axis website and they will come back to you with an answer in a couple of days. If it’s a beta version of the app, they clearly stated that they do not offer support for those type of versions, unfortunately.
Thx for your answer.
It’s the official and stable release, if I got it right. I’ll contact the official support.
Same problem, client crash