Hi Wendy Cuylen
Thank you for posting in the Microsoft Community!
I understand that you are currently experiencing problems with the Office installer.
Don't worry, I'll do my best to help you.
First at all, I would like to explain to you about the problem of this error in the installation program. Most of our customers need to reset their computers in order to solve this problem, but before that, I have some other methods that you can try first.
- Install the offline installation program
Click the following link to download the offline installation package, after the installation is complete, open the Office folder and click Setup64 to install.
Office 2019 Home and Student
https://officecdn.microsoft.com/PR/492350f6-3a01-4f97-b9c0-c7c6ddf67d60/media/en-us/HomeStudent2019Retail.img
What version of Office products are you using?
- Create a new local administrator account
- Open Command Prompt Right click to run as administrator:
- Press “Windows+R” key, type “CMD” and press Enter.
- Create a new user:
- Add the new user to the Administrators group:
If the above two methods are not effective, you need to back up your computer important data and then reset the computer.
Refer to the link below
Recovery options in Windows - Microsoft Support -Reset your PC
Please feel free to let me know if you need further help, thanks.
Best regards
Lele.X - MSFT | Microsoft Community Support Specialist