From what I have seen, recreating the Outlook profile is the only sure way to fix this. I dont think its an Exchange issue either. I think its an Outlook one.
Users cannot access public folders after O365 migration w/ outlook 2016
dirkdigs
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We have a hybrid set up between O365 and our Exchange 2019 server.
Migrating users from on prem seems to work fine.
After migration is complete, user can access their mailbox fine.
But when they try to access public folders on the 2019 server, they get “Cannot display the folder.” <<< Outlook 2016
The only fix is to have them create a new mail profile.
Is there any way around this?
Autodiscover is pointing to the 2019 server.