If you've recently purchased a new device, reinstalled your operating system, or simply need to set up your productivity tools again, you may be wondering how to download Microsoft 365 already purchased. Fortunately, Microsoft makes it incredibly easy to reinstall and activate your subscription on any supported device.

You don't need to buy the software again, and you definitely don’t need to stress about losing access to the tools you've already paid for. Whether you’re a professional, student, or home user, this guide will help you understand every step required to download Microsoft 365 already purchased safely and successfully.

In this comprehensive walkthrough, you’ll learn how to:

  • Verify your Microsoft 365 subscription

  • Access your Microsoft account

  • Download and install the correct version

  • Activate the software on your device

  • Troubleshoot any potential errors

If you’ve been searching for ways to download Microsoft 365 already purchased, you’re in the right place. Let’s get started.

Why You Might Need to Re-Download Microsoft 365

There are several reasons you might need to download Microsoft 365 already purchased:

  • You bought a new Windows or Mac device

  • Your old computer crashed or was reset

  • You accidentally uninstalled the Office suite

  • You're switching from an old version to Microsoft 365

  • You want to use it on multiple devices under the same subscription

The great news is that your Microsoft 365 subscription is tied to your Microsoft account, not your device. That means you can install it multiple times, as long as you're within the device limit defined by your plan.

Step 1: Verify Your Microsoft 365 Subscription

Before you download anything, make sure your subscription is active.

  1. Visit https://account.microsoft.com/services

  2. Sign in using the Microsoft account you used when purchasing Microsoft 365

  3. Under the “Services & subscriptions” tab, check that Microsoft 365 appears and is marked as Active

If it’s not active, you’ll need to renew your subscription before you can proceed. If it is active, you’re ready to download Microsoft 365 already purchased.

Step 2: Sign in to Office.com

Once you’ve confirmed your subscription, it’s time to download Microsoft 365.

  1. Go to https://www.office.com

  2. Click Sign In

  3. Use the same Microsoft account linked to your paid subscription

  4. Once signed in, you’ll land on the Office dashboard

Here, you can access cloud-based versions of Word, Excel, and other apps. However, if you want the full desktop experience, you’ll need to download the suite.

Step 3: Start the Download Process

To download Microsoft 365 already purchased, follow these steps:

  1. On the Office dashboard, click the Install Office button (usually in the top right corner)

  2. Select “Office 365 apps” to download the recommended version

  3. An .exe or .pkg file will begin downloading depending on whether you're using Windows or macOS

If you have specific preferences (such as installing a 64-bit version or a different language), click Other Install Options.

Step 4: Install Microsoft 365 on Your Device

For Windows Users:

  1. Locate the downloaded OfficeSetup.exe file

  2. Double-click the file to begin installation

  3. When prompted, approve User Account Control

  4. Wait for Microsoft 365 to install (this can take several minutes depending on your internet speed)

  5. Once done, you’ll see a success message—your apps are now installed

For Mac Users:

  1. Locate the .pkg file you downloaded

  2. Double-click to open the installation wizard

  3. Follow on-screen instructions to complete the installation

You’ve now successfully downloaded Microsoft 365 already purchased and installed it on your system.

Step 5: Activate Microsoft 365

Once installed, you need to activate your copy to unlock full features.

  1. Open any Office app—such as Word or Excel

  2. You’ll be prompted to sign in

  3. Use the same Microsoft account that holds your active subscription

  4. Once signed in, your Office suite will automatically activate

You can verify activation status by going to File > Account within any app. You should see “Product Activated.”

Using Microsoft 365 Across Multiple Devices

A typical Microsoft 365 Personal or Family subscription allows installation on multiple devices (PC, Mac, tablet, or smartphone).

To download Microsoft 365 already purchased on a second device:

  1. Sign in at https://www.office.com

  2. Click Install Office and repeat the download and installation process

  3. Sign in with the same account to activate

You can manage your installed devices via https://account.microsoft.com/devices

What’s Included in Microsoft 365?

Once you’ve downloaded Microsoft 365 already purchased, you gain access to:

  • Microsoft Word – Document creation

  • Excel – Spreadsheets and data analysis

  • PowerPoint – Presentations

  • Outlook – Email and calendar

  • OneNote – Digital notebooks

  • Access (Windows only) – Database management

  • Publisher (Windows only) – Desktop publishing

You also receive:

  • 1 TB of OneDrive storage

  • Skype minutes

  • Microsoft Teams integration

  • Premium support and security features

Troubleshooting Common Issues

1. Can’t Find Subscription

Make sure you’re using the right Microsoft account. Try checking all email addresses you’ve used. If you're still unsure, reach out to Microsoft Support.

2. Activation Loop

If Office keeps asking for activation:

  • Open any Office app

  • Go to File > Account

  • Sign out and then sign in again

  • Make sure it's the correct Microsoft account with the subscription

3. Installation Doesn’t Start

  • Disable any antivirus software temporarily

  • Try using a different browser

  • Clear browser cache

  • Use the Offline Installer (accessible under "Other options" when clicking Install Office)

How to Use the Offline Installer

If you’re having trouble with the standard download or have limited internet access:

  1. Sign in at https://www.office.com

  2. Click Install > Other Options

  3. Choose the language and 64-bit/32-bit version

  4. Click Download Offline Installer

  5. You’ll receive an ISO file

  6. Mount the file and run setup.exe or setup.pkg

This method helps you download Microsoft 365 already purchased without repeated connection issues.

Frequently Asked Questions

Q: How many times can I download Microsoft 365?
A: Unlimited, as long as you remain within your device limit (typically 5 devices per user for Microsoft 365 Personal or Family).

Q: Do I need a product key?
A: Not for Microsoft 365. Your subscription is linked to your Microsoft account, so you only need to sign in.

Q: Can I use the same subscription on Mac and Windows?
A: Yes, your Microsoft 365 subscription works across both platforms.

Q: I bought a physical copy. How do I download Microsoft 365?
A: Visit https://setup.office.com, enter your 25-character product key, and link the subscription to your Microsoft account.

Q: What if my subscription has expired?
A: You’ll need to renew it to continue using Office apps. Your data won’t be deleted immediately, but access to editing features will be limited.

Tips to Remember

  • Always use the same Microsoft account that was used to purchase Microsoft 365

  • Bookmark https://account.microsoft.com to manage subscriptions and devices

  • Consider enabling two-factor authentication for account security

  • Regularly backup your files using OneDrive to avoid data loss

Final Thoughts

Reinstalling or setting up Microsoft 365 doesn’t need to be stressful. Whether you're changing computers, starting fresh, or simply setting up additional devices, it’s easy to download Microsoft 365 already purchased by signing in to your Microsoft account and following a few quick steps.

Everything you need—subscription management, downloads, support—is centralized in your Microsoft account. There’s no need to pay again or search endlessly for product keys. Just log in, download, install, and activate.

Now that you know how to download Microsoft 365 already purchased, you can get back to being productive with Word, Excel, PowerPoint, and all the tools that keep your work and life organized.