1. Log into Salesforce Platform.
  2. Click on your profile icon at the top right.
  3. Click “My Account”.
  4. Search for the user in the Manage Users page.
  5. Click on the “Activate/Deactivate” dial button.
  6. A popup will ask “Are you sure you want to deactivate this user?”, click “Ok”.
  7. The page will reload and the user will not show as “Inactive” in the list.

    NOTE: Repeat the same process if you would like to activate a previously active user.