My own Microsoft Office license has expired and I want to use the school's license.

If you reinstall Office under the University's account after your own license has expired, you may receive a "System error: 0x80070005" at startup. Please refer to the following to uninstall Office completely.

Uninstall Office from a PC

After completing the uninstallation, restart your computer and install Office from the link below.

https://portal.office.com/OLS/MySoftware.aspx

Below is the page to check the installation method.

Microsoft Office