Method 3. Completely Remove all Office versions and re-Install MS OFFICE. Method 1. Remove Office Activation Prompt by Removing Wrong License. The first method to stop Office to prompt you to activate an old Office 2016/2019 license, is to remove the license from your computer. 1. Close all Office programs. 2. Open Command Prompt as Active Directory-based activation can activate Office installed on domain-joined computers. The product key information, which is the same that is used by KMS, is stored in Active Directory and replicated throughout the forest. If Office can't contact Active Directory for activation, Office tries to activate by using KMS. If there is a free trial of Office 365 on that new PC, your should completely remove that before trying to install Office Home and Student 2019 Use this tool from Microsoft to remove all remnants of any previous Office Installation: I purchased my Office 2019 via HUP with my employer - and have installed it with the product key, yet my system is still running office 365 instead of the new Office 2019. Office 2019 is listed in my programs as being installed. My programs still open in Office 365. How do I activate Office 2019? Opening my office programs opens the old 365 So I ended up figuring out that the product key that came in the box that was shipped from SHI only worked to access the Microsoft website and there is a different product key under my account on Microsoft's website that must be entered on the computer that has Office installed. The key was used when I initially activated Office 2019 for my old computer last month. I can't find any number to call to activate the software on my new computer. On the Activation Wizard, when it gives the option to activate by phone, the number provided for the United States is a non-working number. To fix this issue, update your Mac's name to remove the invalid characters: In the top menu bar, select the Apple icon > System Preferences > Sharing (third row.) In the Computer Name text box, update your Mac's name and then close the window. Restart your Mac and then activate Office. Click Open with. Click File Explorer. Go through the setup process and complete the installation of Office 2019. Launch any of the Office applications and enter your product key. Remember, if it doesn't activate, please contact support. Best regards, Andre Da Costa. xyMqW.

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