The game transitioned to 64-bit with the 1.5.5 update. To run it on a 32-bit system, you must use the "32-bit compatibility" beta branch in Steam, which locks you to Stardew Valley version 1.5.4.
If you are committed to using a 32-bit setup, you need to use older versions of SMAPI.
Limited to a maximum of 4GB of RAM allocation. It runs on both 32-bit and 64-bit operating systems. smapi launcher 32 bit better
While 64-bit is standard now, here is why you might consider the 32-bit setup:
The short answer is:
The smartest workflow for a serious modder is to install versions side-by-side. Rename your executables:
Download the latest version from Nexus Mods or SMAPI.io. The game transitioned to 64-bit with the 1
Unless you are restricted by the hardware constraints listed above, than the 32-bit version for standard gameplay and heavy modding. 1. Massive Expansion Mod Support