Office 365 is installed as a 32-bit program on your Windows PC by default. Microsoft recommends the 32-bit version, even on 64-bit systems, to avoid compatibility issues with third-party add-ons.

In this guide, we'll show you the proper steps to upgrade from the 32-bit to the 64-bit version of Windows 10 without purchasing a new license.

While 32-bit programs can run easily on 64-bit PCs, vice-versa is not possible. So upgrading opens up access to applications which only work on 64-bit.

If your version of Windows is 64-bit, you're able to install both 32-bit and 64-bit software programs, so there are two different "Program Files" folders on your computer. However, 32-bit versions ...

Your new computer has a 64-bit processor, but your software probably is still 32-bit. Why haven't software developers done more about it?