How to Fix Office 2019 Activation Error Code 0x0 on Mac and Windows
Question details
Users are unable to activate Office 2019, receiving an 'Unknown error has occurred' message along with error code 0x0.
- Product
- Microsoft Office 2019
- Device & OS
- macOS and Windows
- Scenario
- Activating Microsoft Office 2019 after a fresh installation or transferring data to a new computer.
- Observed behavior
- Activation fails and displays 'Unknown error has occurred' with error code 0x0, preventing access to editing features in Office applications.
Ensure you have a stable internet connection and have your correct Office 2019 account credentials ready before attempting to remove and reactivate your license.
Use the License Removal Tool on Mac
Clear out old or corrupted licensing data on macOS that frequently conflicts with new activation attempts.
When transferring data to a new Mac or reinstalling Office, old activation files can linger and cause error 0x0. Microsoft provides an official tool to safely wipe these hidden files.
Download the official Microsoft Office License Removal Tool from the Microsoft support website.
Open the downloaded .pkg file and follow the on-screen prompts to remove the existing license data from your Mac.
Click the Apple menu and select Restart to ensure all residual license data is entirely cleared from the system memory.
Launch Word or Excel, sign in with the Microsoft account associated with your Office 2019 purchase, and complete the activation process.
Troubleshoot Windows Activation Errors
Verify your subscription status and run Microsoft's diagnostic tools on Windows.
Avoid Activation Errors with WPS Office
Tired of dealing with frustrating activation errors and license management? Switch to WPS Office, a free, lightweight, and incredibly user-friendly alternative to Microsoft Office. It requires minimal setup and provides seamless compatibility with all your existing files.
- 1. Download the Installer: Visit the official WPS Office website and download the correct installer for your Mac or Windows computer.
- 2. Install the Software: Run the downloaded file and follow the quick, one-click installation process.
- 3. Open Your Files: Launch WPS Office and immediately open your existing Word, Excel, or PowerPoint documents without needing to activate a paid license.
Frequently Asked Questions
Why am I getting error code 0x0 when activating Office 2019?
Error 0x0 typically occurs when there is conflicting or corrupt licensing data left over from previous Office installations, or when system data is migrated from an older device to a new one.
Will removing my Office license delete my documents?
No, using the License Removal Tool only clears the hidden activation files on your computer. Your saved Word, Excel, and PowerPoint documents will remain perfectly intact and untouched.
Can I use Office 2019 without activating it?
Without successful activation, Office 2019 enters a reduced functionality mode. You will be able to view and print documents, but you won't be able to edit them or create new ones until the software is activated.
What should I do if the License Removal Tool doesn't work?
If the tool fails to resolve the issue on Mac, ensure your macOS is fully updated, temporarily disable any firewall software blocking the activation server, or try creating a new local user profile to activate Office.
