How to install the 64-bit version of Office 365

M ost computers, laptops, 2-in-1 devices, tablets and even some smartphones run on 64-bit processors. Among other things, this also leads to a general movement of the software world towards 64-bit apps. As Microsoft is one of the largest software companies in the world, lots of software developed by them is available both in 32-bit and in 64-bit versions. But for some of Microsoft's applications, finding the 64-bit version is somewhat "not intuitive". This the case with the 64-bit version of Microsoft Office 365, which is available, you can install it, but it's a bit hidden from view. It's not very clear how to download it on your computer. Today, we're going to show you how to get to it and we're also going to tell you why you might want to go with the 64-bit version of Office instead of the default 32-bit version that Microsoft pushes to its subscribers.

Why you might prefer Office 365 in 64-bit?

One reason is that you might want 64-bit Office 365 because you prefer to be as up-to-date as possible. Depending on how you intend to use your Office 365 apps, their 64-bit versions might work better than the 32-bit ones. Here are the main reasons for which you should go with the 64-bit version of Office 365:

  • You can work with very large Excel workbooks. For instance, you'll be able to work on Excel workbooks that have complex calculations, connect to external databases or are larger than 2 GB each.
  • You can work with large PowerPoint presentations, that have big pictures, long videos at high resolutions and/or complex animations.
  • You can work with large Word documents that aren't just about text. If they have large images or large tables, the 64-bit version of Microsoft Word will perform better.

Of course, there are also drawbacks when using the 64-bit version of Office 365: if you have some add-ins that were developed to work only in the 32-bit version of Office, they will stop working in the 64-bit version. However, this is a situation that's mostly encountered in businesses where specific add-ins were created to fill specific needs. Home users or business users that don't really use add-ins, should not stumble upon such problems.

How to install Office 365 in 64-bit?

Because we're talking about Office 365, we already assume that you have an active subscription plan for it and you know your credentials. If that's true, head to and Sign in with your account.

Once you logged in, click or tap on the My account link.

Then, in the Install section, click or tap on the Install button.

In the next screen, you'll be tempted to click on the Install button. Don't hurry! If you press Install now, you'll only get the 32-bit version of Office 365. If you want the 64-bit version of Office 365, click or tap the "Language and install options" link.

On the "Language and install options" page, click or tap on the link called "Additional install options".

It's found right under the Install button.

Finally, on the bottom of the "Additional install options" web page, you get to choose the Version of Office 365 that you want to install. By default, it's set to "Office 32-bit (recommended)".

Click on the Version drop-down menu and choose the "Office 64-bit" option.

At last, you can now click or tap the Install button. You'll be asked where you want to save the 64-bit installer for Office 365. Choose a location and click or tap Save.

Then, all there's left to do in order to get the 64-bit version of Office 365 on your computer is to run the installer and wait for it to end the installation.

When done, if you want to double check that you got the 64-bit version, you can open any of the apps and head to "File -> Account -> About".

In the About window, you can see the version of the app that you are using. The About window should say something like "Microsoft Word [...] 64-bit".


Downloading and installing the 64-bit version of Office 365 apps is not complicated, but the links to it are hidden from view. However, with a bit of attention you should get what you want in no time. Now that you know how to get it, will you use Office 365 in 64-bit? Or will you stick with the 32-bit version? Share your opinion using the comments form below.