Failed to join server error code 4001

I finished the prologue and I pick "start" by myself for the 1st time and i get "Failed to join server error code 4001". Im playing from xbox version on pc. What's causing this? Are there any fixes?

EDIT: ***** SOLUTION FOUND!**********************

A workaround to get in past the 4001 error code has been found. Boot the game up to the point of getting the 4001 error but before you click "start" open up the xbox app, click on you profile top on the top left and sign out. Then tab back into the game and click start. Its worked for me and the original discoverer u/Ok_Task5367 whose reddit account is to new too post.

Edit: Signing out of xbox gamebar too might be necessary if the above doesn't work.