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Office 365 Product Key Activation Guide

Activating your Office 365 product key is a straightforward process that allows you to unlock all the powerful features of Microsoft’s productivity suite. Whether you’ve purchased a new key or are renewing an existing subscription, this guide will walk you through the activation steps.

What You’ll Need

Before beginning the activation process, ensure you have:

• A valid Office 365 product key (25 characters)
• A Microsoft account
• Internet connection
• Supported device (PC, Mac, or mobile)

Step-by-Step Activation Process

Step 1: Sign In to Your Microsoft Account

Visit office.com/setup and sign in with your Microsoft account credentials. If you don’t have an account, you’ll need to create one.

Step 2: Enter Your Product Key

Once signed in, you’ll be prompted to enter your 25-character Office 365 product key. Carefully type the key exactly as it appears, including hyphens.

Step 3: Verify Your Subscription

Microsoft will verify your product key and display the subscription details. Confirm that the information matches what you purchased.

Step 4: Download and Install Office 365

After verification, you’ll be directed to download the Office 365 installer. Choose your preferred language and version (32-bit or 64-bit), then run the installer.

Step 5: Activate Office

Once installed, open any Office application (like Word or Excel). You may be prompted to sign in again with your Microsoft account to complete activation.

Troubleshooting Common Issues

Invalid Product Key

If you receive an “invalid key” message:

• Double-check for typing errors
• Ensure you’re entering the Office 365 key, not a different Microsoft product key
• Contact the retailer if the key still doesn’t work

Already Used Key

If your key shows as already used:

• Check if you’ve previously activated it on another device
• Contact Microsoft Support if you believe the key was used without your authorization

Managing Your Office 365 Subscription

After activation, you can manage your subscription at account.microsoft.com/services. Here you can:

• Check expiration date
• Add more licenses
• Change payment method
• Cancel or renew your subscription

By following these steps, you’ll have full access to Office 365 applications and cloud services. Remember to keep your product key in a safe place for future reference.