Add gmail account with 2 step verification to outlook 365 on PC

Hello!

You will first need to generate an app password in your gmail account, then when authentication against Outlook you simply enter that app-password.

Guide from Google on how to generate an app password:

1. Go to your Google Account.
2. On the left navigation panel, click Security.
3. On the Signing in to Google panel, click App passwords. 
   Note: If you can't get to the page, 2-Step Verification is:
   • Not set up for your account
   • Set up for security keys only
4. At the bottom, click Select app and choose the app you’re using.
5. Click Select device and choose the device you’re using.
6. Click Generate.
7. Follow the instructions to enter the App password (the 16 character code in the yellow bar) on your device.
8. Click Done.