Configuring preferences and options in Outlook.com
Hi everyone,
Let me help you with your concern. If you've set up mail forwarding for your Business Email address, and then try to configure POP, you will see this error. Business Email customers cannot forward their business mail and use POP at the same time. To take advantage of POP, disable mail forwarding. Once you've disabled mail forwarding, you can begin using POP to check your Business Email. If the issue persists, don't hesitate to reply.
Thanks!