Which Qt version is required for Win10/Win7

[JoSchn]

I want to create Qt project (32bit) with Visual Studio 2022. The target systems are Win10 as well as Win7.
Which Qt version does this support or do I have to use?
Can I use the latest Qt 6.xx version?

[jsulm]

@JoSchn Accordinig to https://doc.qt.io/qt-5/windows.html last Qt version which supports 32bit Windows is 5.15
I'm wondering why you need 32bit in 2025?

[JoSchn]

OK, you mean 5.15 supports 32bit Windows System.
I missed to write, that the target Win10 and Win7 system are both 64bit Windows.
I have to compile the Qt project in 32bit, because of other dependencies, and run it on 64bit target systems.
Which Qt version can be used in this case?

[aha_1980]

@JoSchn: As @jsulm already said, you have to use Qt 5.15 if you want to target Win7. This has nothing to do with 32 or 64 bit architecture.

Regards

[jsulm]

@JoSchn If you go to https://doc.qt.io/qt-6/windows.html you will see that Qt6 does not support 32bit, doesn't matter whether the app is running on Windows 64bit or 32bit...

[Christian Ehrlicher]

I would guess Qt6.x compiles fine with 32bits but it's not tested in the CI so officially unsupported.