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Match the system's architecture

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.

There are three main architecture types for .DLL files:
  1. x86 (32-Bit): This architecture is also known as 32-bit and is mostly used on older systems. It can handle up to 4GB of memory.
  2. x64 (64-Bit): Also known as 64-bit, this architecture is used on most modern systems and can handle significantly larger amounts of memory than x86.
  3. ARM/64: This architecture type is used for devices that are powered by ARM processors, such as smartphones and tablets.

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.

How to check your system architecture

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.

Click Start - About your PC
Click the 'Start' menu and enter 'About your PC'.
Device specifications - system type
Under 'Device specifications' look for the 'System type'.
Did you know?

Not all .dll errors stem from missing files. They can also result from version mismatches, file corruption, or software incompatibility.