Migrated to new exchange server 2016. Most users work fine. Some users i needed to manually recreate the email account since autodiscover would not work for them. I tested Autodiscover from outlook on those users and this is what I get:
local autodiscover failed 0x8004010f
The only thing I could find was relating to some delegate flag or a registry that needs to be deleted. I checked and these users do not have that delegate flag and the registry key does not exist.