How to Install and Activate Office 2019 from a DVD and Product Key
Question details
The user needs to properly install and activate a newly purchased physical copy of Office 2019 to regain editing access to their documents.

- Product
- Microsoft Office 2019
- Device & OS
- not provided
- Scenario
- Installing Office 2019 via DVD and applying a new product key after experiencing document access restrictions caused by previous installations.
- Observed behavior
- Existing Word and Excel files continuously open in read-only mode because an older, unlicensed, or conflicting version of Office is still active on the computer.
Ensure you have your new Office 2019 DVD and the corresponding 25-character product key ready. Verify which edition of Office was previously installed so it can be completely removed.
Perform a Clean Installation of Office 2019
Uninstalling old versions before installing the new Office suite eliminates Click-to-Run conflicts and resolves read-only licensing errors.
Having multiple versions of Office installed simultaneously, especially mixing different Click-to-Run installations, typically causes activation conflicts and forces files into read-only mode. Completely removing the old license and software ensures the new product key applies correctly.
Open your system's Control Panel or Settings app, navigate to 'Programs and Features' or 'Apps', and completely uninstall all existing Microsoft Office installations, including any trial versions or older suites.
Reboot your computer to ensure all old licensing files, background processes, and temporary registry entries from the previous Office installations are fully cleared.
Insert your new Office 2019 DVD into the computer's disc drive. Run the setup file from the installation media and follow the on-screen instructions to complete a clean installation.
Launch an Office application such as Word. When prompted by the activation wizard, enter your new 25-character product key. Once activated, your existing documents will open with full editing capabilities.

Open and Edit Your Documents Instantly with WPS Office
If you are struggling with complex Office 2019 installations, DVD drives, or faulty product keys, WPS Office provides a hassle-free solution. It is a powerful, lightweight suite that is entirely free to download, allowing you to bypass read-only restrictions and start editing immediately.
- 1. Download the Installer: Visit the official WPS Office website and click the free download button to get the lightweight installer.
- 2. Install WPS Office: Run the downloaded executable file and follow the brief on-screen instructions to install the suite on your computer.
- 3. Open Your Files: Launch WPS Office and directly open your existing Word and Excel documents to begin editing them without read-only restrictions.

Frequently Asked Questions
Why are my existing Word and Excel files opening in read-only mode?
This happens when an older, unlicensed, or conflicting trial version of Office is still acting as the default application for your files. Uninstalling the old software and cleanly activating your new Office 2019 will restore your editing rights.
Will uninstalling my old version of Office delete my saved documents?
No. Your personal documents, such as Word and Excel files, are stored locally on your hard drive or in the cloud. They are not tied to the Office software installation and will remain perfectly safe when you uninstall the program.
Why is my Office Professional Plus product key failing to activate?
Office Professional Plus is typically distributed to enterprises through volume licensing or MSDN subscriptions, making it uncommon as a legitimate standard retail product. If your key was purchased from a third-party seller and fails, you will need to contact them for a resolution.
Can I keep my old Office version while installing Office 2019?
It is highly recommended not to do this. Having multiple Click-to-Run versions of Office installed simultaneously frequently causes licensing conflicts, application crashes, and read-only errors. Always uninstall older versions before upgrading.




