after windows update , Office 365 outlook could not open, need password problem.....

after windows update , outlook could not open
-- run the O365 tool, create a new profile, the outlook can open
-- remove O365 accuount from the original profile, the outlook opens.
--- the original outlook profile is correupted

then another issue pops up...
-- outlook happily download emails for about 30 minutes, then screen flashes, need password on right hand corner
-- in retrospect, the password screen flashing means the windows supplied email account username/password, but the wrong one. but I do not have the chance to manually supply the u/p
-- eventually found a clue on the internet, looks like windows 10 wants to manage email account, in windows settings, disconnect the email account, the outlook can then maintain the connection