Install Office 2019 on Windows or Mac

Office 2019 installs either from your Microsoft account or from an ISO file in your library, depending on the edition you ordered. Activation details are in Activate Office 2019.

What you received

Your order contains one product key made of 25 characters, in the form XXXXX-XXXXX-XXXXX-XXXXX-XXXXX. We send it in the order confirmation email. You can also look it up at any time in your Lizensa account under My Library.

Editions that install from your Microsoft account:

• Office Home & Student 2019
• Office Home & Business 2019
• Office 2019 for Mac

For these, Microsoft supplies the installer. Your key is redeemed once at office.com/setup, and Office is then linked to your Microsoft account. A one-time purchase like this is licensed for one computer.

Editions that install from an ISO file in your library:

• Office Professional Plus 2019
• Office Standard 2019
• the multi-user volume versions of both

These are Microsoft's volume-licensed editions for Windows. The key is not redeemed anywhere. You type it into Office after setup. According to Microsoft, Professional Plus 2019 contains Word, Excel, PowerPoint, Outlook, OneNote, Access, Publisher and Skype for Business. Standard has fewer apps; the product page lists them.

Support has ended. Microsoft stopped supporting Office 2019 for Windows on 14 October 2025, and Office 2019 for Mac on 10 October 2023. Microsoft says the apps may continue to function, but it may no longer provide technical support, bug fixes or security fixes, and there is no phone or chat support. For Office 2019 for Mac, Microsoft names version 16.78 from October 2023 as the last build that supports Office 2019 licence types.

Before you begin

• Windows for Professional Plus and Standard: Windows 11 or Windows 10, including Windows 10 LTSC 2019 and 2021, or Windows Server 2019, 2022 or 2025. Windows 10 in S mode is not supported.
• Windows for the home editions: Microsoft's current requirements name Windows 11.
• PC hardware: a two-core processor at 1.6 GHz or more for Professional Plus and Standard, or 1.1 GHz for the home editions, 4 GB of RAM (2 GB for 32-bit), 4 GB of free disk space and a screen of 1280 x 768 or more. Professional Plus and Standard always install on the system drive, usually C:.
• Account: you need administrator rights on the PC, or on the Mac to type the Mac password.
• Internet: the home editions need a connection to redeem the key and to download Office. The ISO needs no connection during installation.

Get the software

Home & Student, Home & Business and Office 2019 for Mac

Lizensa does not send an installer for these editions. You collect Office from Microsoft with your key:

1. Open office.com/setup.
2. Sign in with your Microsoft account. If you do not have one yet, create it there.
3. Enter the product key from your order.
4. Complete the remaining steps until Microsoft shows that Office belongs to your account.

Note down which Microsoft account you used. Later reinstalls start from that account, and you do not redeem the key again.

Professional Plus and Standard

Your download link is in your order email and in your account.

1. Sign in to Lizensa and open My Library.
2. Select Download next to Office Professional Plus 2019 or Office Standard 2019.
3. Save the file somewhere easy to find, such as Downloads.

The file is an ISO disc image of roughly 1.6 to 1.9 GB. It holds the 64-bit Office 2019 in one language. Your library picks the language of the shop where you ordered; if that language is not available, you receive English (en-US). We keep 33 languages, so ask our support before installing if you need a different one.

The link is generated when you select Download and works for 15 minutes. If the download breaks off, select Download once more to get a fresh link.

Install

On Windows, first remove any older Office version. In Windows 11, open Settings > Apps > Installed apps; in Windows 10, open Settings > Apps > Apps & features. Select the old Office and choose Uninstall. Your documents are not affected. Two copies of Office on one PC can cause activation conflicts.

Home & Student and Home & Business on Windows

1. Go to account.microsoft.com and sign in with the account you used at office.com/setup.
2. On the Overview page, select Office apps. Find Office 2019 and select Install. Another language or a 64-bit version is available from the drop-down list next to it.
3. Start the downloaded file. Edge shows Open file, Chrome Setup and Firefox Save File.
4. Windows asks "Do you want to allow this app to make changes to your device?". Select Yes.
5. Keep the PC online while Office downloads and installs.
6. When the message "You're all set! Office is installed now" appears, select Close.

Office 2019 for Mac

1. Sign in at account.microsoft.com and download Office.
2. Open Finder, go to Downloads and double-click the installer package.
3. Select Continue, read the software licence agreement, select Continue again and then Agree.
4. Select Install. Type your Mac password when prompted and select Install Software.
5. Select Close at the end.

Professional Plus and Standard from the ISO

Save open documents and close all Office apps. Setup closes any Office app that is still running.

1. In File Explorer, right-click the ISO file and select Mount. It opens as a new drive, for example E:.
2. On that drive you see setup.exe, configuration.xml, install.cmd and a folder called Office.
3. Right-click install.cmd and select Run as administrator. Confirm with Yes.
4. The Office installer shows its progress. It does not ask you to accept terms or pick apps.
5. When it reports that installation is complete, close the window. Right-click the drive and select Eject.

install.cmd passes configuration.xml to Microsoft's Office Deployment Tool, which is the setup.exe on the drive. To run the same step yourself, open Command Prompt as administrator, switch to the mounted drive and enter:

setup.exe /configure configuration.xml

The installer only uses the files on the ISO. You can stay offline until you activate.

Activate

• Home editions on Windows: open Word or Excel and select Accept for the licence terms. In most cases Office activates at this point. If the Activation Wizard opens, follow its prompts.
• Office 2019 for Mac: open Word from Launchpad. In the What's New window, select Get Started and sign in with your Microsoft account.
• Professional Plus and Standard: Office starts with Microsoft's generic volume key, not yours. In Word, go to File > Account, select Change Product Key under Product Information, enter your key and select Activate. Or run these two commands in Command Prompt as administrator:

cscript "C:\Program Files\Microsoft Office\Office16\OSPP.VBS" /inpkey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
cscript "C:\Program Files\Microsoft Office\Office16\OSPP.VBS" /act

By default, Microsoft does not let standard users activate a volume edition with a MAK, so sign in as an administrator. More options and error messages are in Activate Office 2019.

No internet on the PC

The ISO installs offline, but online activation needs a connection. If the Activation Wizard on Windows offers the telephone option, use it instead:

1. Enter your key with the /inpkey command above. This step works offline.
2. Open Word. If the Activation Wizard offers "I want to activate the software by telephone", select it and then Next.
3. Choose your country or region and call the number shown.
4. Read out the Installation ID, type in the Confirmation ID you receive and select Next.

The command-line route is in the activation guide.

Check it worked

1. Open Word.
2. On Windows, select File > Account. On a Mac, choose Word > About Word in the menu bar.
3. Read the product name. On Windows it is under Product Information, and after activation no request to activate appears there; on a Mac the window shows the licence type. The name must match your order, for example Office Professional Plus 2019 or Office Home & Business 2019.

If the wrong edition is installed, uninstall it and install again from the download that matches your order.

After activating Professional Plus or Standard, Command Prompt as administrator confirms the licence:

cscript "C:\Program Files\Microsoft Office\Office16\OSPP.VBS" /dstatus

Find the entry whose LICENSE NAME contains Office 19 and check that its status line reads LICENSE STATUS: ---LICENSED---.

If something goes wrong

The title bar of Word says "Unlicensed Product". Office is installed but not activated, and most features are switched off. Activate it as described above. See error 0x4004F00C for the grace period.

Office refuses the key from your order. Check the edition first. A Standard key does not fit Professional Plus, and a home-edition key does not fit the ISO editions. If the edition matches, contact our support with your order number. See error 0xC004F050.

Activation fails with 0xC004F074. Office is still trying to reach a company activation server with the generic key. Enter your own key with the commands above and activate again. See error 0xC004F074.

A command answers "Access denied" or 0x80070005. Command Prompt is running without administrator rights. Right-click Command Prompt, select Run as administrator and repeat the command. See error 0x80070005.

Double-clicking setup.exe does nothing. Run install.cmd as administrator instead.

Setup reports a conflict with another Office product. Check which product the message names. The ISO installs 64-bit Office, and Microsoft does not allow 32-bit and 64-bit Office products side by side, so a 32-bit Office, Visio or Project blocks it. Remove the product named, restart the PC and run setup again.

office.com/setup says "This product key has already been used". The key is already linked to a Microsoft account. Sign in with that account at account.microsoft.com and install from there.

office.com/setup says "This product key isn't meant for your region". Do not try other keys. Send our support your order number and the exact message.

Office 2019 for Mac reports a licence problem after an update. For Office 2019 for Mac, version 16.78 is the last build that supports Office 2019 licence types. Contact our support with your order number and a screenshot of the message.

Need more help? Contact our support with your order number, your edition and the exact message.