Ever needed to download Office 365 for Mac but didn’t have the login credentials yet? Unfortunately the way to download the installer is via the Office 365 portal, which requires you to sign in with a valid O365 account. However Microsoft does have hidden links to download the installers directly, without signing in first. See these links below:
Download Office 365 / Office 2019 for Mac installer
Download Office 2016 for Mac installer
Note that while you can download the installer without signing in, you will still need either a Microsoft account with a valid license, or a product key in order to activate Office and begin using it.