Is there any downside of not using the 64Bit version, any functionality missing? I run Windows 7 64Bit and P3D 4.5 HF2.
I think you'll lose the Custom camera views, because those are only available in the P3D4.5+ version of Simconnect, but the 32 bit version is linked with the FSX Simconnect, which doesn't have those. But I think this is better than being cut off from ALL future updates, which would have been the case if you used an older installer (installed with the network disconnected).
Other than that, I don't think there would be any real differences, since Couatl.exe it's a separate executable, it has its own separate 4GB address space, which is even overkill considering it hardly takes more than 200-300MB of RAM.
For the time being, the work-around is fine, but I still think you should fix this (despite of what you explained).
Sorry, but I don't agree.
We are free from any support obligation to do anything for Windows 7 in January 2020, when it went completely out of support, and asking to do anything for Windows 7 now, more than 2 years later, is just as unreasonable as asking to continue to support Windows XP, which we also used to support years ago.
OS do have a life cycle, and the one for Windows 7 ended 2 years ago, and this is completely irrelevant how good/bad it was, it's not OUR decision when and how stop supporting it, it has been decided by Microsoft years ago, they started to alert users a long time ago, and when you decide against all common sense to continue to use an unsupported OS years past its due date, you do it at your own risk and you must be prepared to accept the consequences, for example not being able to find an older installer.
You want to live dangerously and stay with an old OS forever ? ( nothing last "forever" anyway, your PC will break or you would want a new one, which will come with Windows 10 or 11 ) Fine, but the first thing you should do, is a BACKUP of all installers of the software you bought, because you just can't expect the vendor would keep legacy installers always available. Bandwidth and disk space on the cloud is NOT free, it has a monthly cost that is based both on the bandwidth used but also the space taken so, it has some extra cost for us, even if nobody downloads it, and that's just another aspect of what stopping support means.
A real world example anybody can understand:
When Apple stopped selling 32 bit iPhone/iPad/Macs, they started alerting developers that 32 bit apps at first won't be accepted anymore in their App Store, and eventually they would be phased out.
When this happened, hundreds of thousands of apps were REMOVED from the App Store, they were lost forever
unless a local backup of the installer was made, but it was no longer possible to download them again from Apple, without even considering they won't run on newer OS or devices anyway, but that's not really the point, the point was you couldn't DOWNLOAD anymore, even if you bought them, even if you wanted to use them on the older OS or the older device they were brought from.
I'm sure if Apple did anything wrong or not 100% completely legal, class actions/suits would have happened, and this is exactly the same. You want to use a legacy OS/device past its due date ? Fine, but backups are your own responsibility, you can't put that onus on the developer, forever.
Well, in fact, is not even "the same", because Apple being in control of the complete hardware/software/marketplace system, was the only one deciding when and how cutting off legacy apps from users, we mostly depend on what Microsoft does with its updates and tools.