M365 Outlook (How To) Clean Up Contact Groups

Outlook Desktop version is the recommended user for cleaning up contact groups.
  1. With Outlook open, select People on the Navigation bar.

  2. In the My Contacts drop down menu on the left side of the screen, select the group from which you want to delete.

  3. The contacts will display in a list in the next pane.

  4. Deleting:

Single Contact: Select a contact, press Delete on keyboard.

Multiple Contacts, Non-contiguous: Select a contact, press and hold CTRL key while selecting additional contact(s), press Delete on keyboard.

Multiple Contacts, Contiguous: Select a contact, press and hold Shift key while selecting last contiguous contact, press Delete on keyboard.