- Have an old Mac Laptop with an old MacOS version that you need Microsoft Office installed on (works with Intel-based Mac running High Sierra)
- Have an Office 365 License
- You attempted to install Office and, when prompted to input your account details to authenticate in each Office App, the authentication window turns blank (in my case, it occurs right after inputting the account email)
- Although it presents similiar issues when authenticating, I can't tell for sure if it works with Office 2016 (which I also installed, but moved on from before trying out this approach). This method was tested with Office 2019 alone.