The installer location depends on which Office 2019 edition the former Home Use Program sold you: use Home Use Program Order History for Professional Plus, or Microsoft account Services & subscriptions for Home & Business.^1^
If you purchased Office Professional Plus 2019
- Open the Home Use Program Order History.
- Enter the work email address used for the original purchase.
- Check that mailbox, including its junk folder, for the message containing your product key and installation instructions.
- Download and run the installer provided through that recovery process.
If you no longer receive email at that work address, continue with the Microsoft-account check below.
If you purchased Office Home & Business 2019
- Open Microsoft account Services & subscriptions.
- Sign in with the personal Microsoft account used when Office was purchased or first activated—not the work email address.
- Locate Office 2019 and select Install.
- If offered, choose the language and 32-bit or 64-bit edition, then select Install again.
- Run the downloaded setup file and approve the Windows User Account Control prompt.
- Open Word or Excel after installation, accept the license terms, and sign in with the same Microsoft account to activate it.^2^
If Office 2019 does not appear
- Try any other personal Microsoft account that may have been used when Office was first activated.
- For Professional Plus, use Order History first; if no email arrives, check Services & subscriptions as directed above.
- Do not use an unrelated public installer: installation alone does not provide the license, and activation still depends on the original product key or linked Microsoft account.
- A one-time-purchase Office license is licensed for one installation. If this is a replacement PC, remove Office from the previous PC before transferring it.^2^
Office 2019 has reached end of support and no longer receives security updates. It can still be reinstalled, but using it may expose the PC to security risks.^2^
References
- Install or reinstall Office or Microsoft 365 through Microsoft Workplace Discount Program | Microsoft Support
- Download and install or reinstall Office 2021, Office 2019, or Office 2016 | Microsoft Support