Upgrading to Visual Studio 2022 should be a low-friction experience and should not require your code to change. You can still build 32-bit, and all of your existing applications, in Visual Studio 2022 ...

Given the slow transition to 64-bit technologies, the Whidbey development platform will most likely be used primarily for writing 32-bit code.

With Visual Studio 2022, you'll finally be able to take advantage of all of your system RAM. Earlier versions of Visual Studio are 32-bit applications, thereby hobbling VS to a maximum of 2GiB RAM.