Find out whether your Windows operating system is 32-bit or 64-bit.

Paul Leahy is a computer programmer with over a decade of experience working in the IT industry, as both an in-house and vendor-based developer.

To run optimally, you should run the version of Windows thats aligned to the processor running your computers hardware.

A 64-bit processor should generally run a 64-bit version of Windows, although it can run a 32-bit version just fine.

A 32-bit processor, however, can only run a 32-bit version of Windows.

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Youll see your hardware and software capability in the About page.

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For Windows 7 and Windows Vista, click Start Computer Properties to reveal a configuration window.

In the System type section, youll see whether youre running a 32- or 64-bit version of Windows.

For the most part, you generally wont have to worry about the system architecture of your computer.

If you use the Microsoft Store, for example, everything will be taken care of for you.

In some cases, your computer will ship with a 64-bit processor but youll have a 32-bit version of Windows loaded at the factory.

It doesnt matter if your processor supports 64-bit computing; if the operating system supports 32-bits only, you cannot run a 64-bit program.

For example, Microsoft Office supports both 64- and 32-bit installers.

You can only use the 64-bit version if both your processor and your version of Windows are at a 64-bit level.

Some stand-alone applications released during the Windows 7 era offered both 32- and 64-bit versions.

If you downloaded the wrong one, the installer typically failed.

If the installer allowed you to load a 64-bit app on a 32-bit computer, the program would fail with various application errors.