Learn how to activate Microsoft Office 2019 with your 25-character product key. We show you 4 different methods depending on your situation.
Format: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX (25 characters)
Required for online activation (except phone method)
Or ready to install if using method 1
Make sure your key is for Office 2019
The easiest way to activate Office 2019 is by entering your key during the installation process.
If you already have Office 2019 installed but not activated, you can enter the key from any Office application.
Link your product key to your Microsoft account to manage your license and easily reinstall in the future.
If online activation fails, you can activate Office 2019 by phone following these steps.
Verify you entered the key correctly. Make sure not to confuse similar characters (0 with O, 1 with I). If you purchased a key, contact the seller.
Each key can only activate one installation. If you reinstalled Office, deactivate it first from the previous device or contact Microsoft Support.
Check your Internet connection. Temporarily disable firewall or antivirus. Try again later if Microsoft servers are busy.
If you linked your key to a Microsoft account, sign in with that account. If not, use the same original product key.
This can happen with significant hardware changes. Use phone activation or contact Microsoft Support to transfer the license.
Your product key can be found in: the confirmation email if you purchased online, inside the packaging if you bought a physical box, in your Microsoft account if you linked it, or on the invoice or digital purchase receipt.
An Office 2019 product key can only activate one device (PC or Mac). If you need to install on multiple devices, you need additional licenses or consider Microsoft 365.
No, Office 2019 is a perpetual license. Once activated, your license doesn't expire and you can use the software indefinitely without additional payments.
Yes, you can reinstall and reactivate Office 2019 with the same key after formatting. If you linked it to your Microsoft account, simply sign in to activate automatically.
If you linked it to your Microsoft account, you can find it at account.microsoft.com. If not, you can use tools like ProduKey to recover it from an existing installation, or contact the original seller.
Yes, you can use phone activation if you don't have an Internet connection. Follow the instructions to get a Confirmation ID by calling Microsoft's activation number.
No, Windows and Office keys are completely different and not interchangeable. You need a specific Office 2019 key to activate it.
Office 2019 works with reduced functionality after a grace period (usually 30 days). It's recommended to activate immediately to avoid limitations.
Online activation is instant and automatic. Phone activation is manual but useful when online activation fails or you don't have Internet.
Yes, retail Office 2019 licenses are transferable. First uninstall Office from the old PC, then install and activate on the new PC with the same key.