For .DLL files to work properly on your system, they need to match the system's architecture and be placed in the correct directory. On a 64-bit Windows system, you can use both 32-bit and 64-bit DLL files. Place 32-bit DLLs in the '/windows/SysWOW64' directory and 64-bit DLLs in the '/windows/System32' directory. Ensuring DLLs are in the right location is crucial for smooth system operation.
64-bit systems are generally backward compatible with 32-bit systems. This means that a 64-bit operating system can run 32-bit applications without any issues. However, 32-bit operating systems are unable to run 64-bit applications.
In Windows, to determine whether your system is running a 32-bit or 64-bit architecture, go to the "System" section in the Control Panel. Here, under "System type," you'll see either "32-bit Operating System" or "64-bit Operating System" displayed.