Forum Discussion
Exchange 2016 CU23 breaks Outlook 2010 connection
Hello, I have an environment with an Exchange 2016 CU22, that connects to a public folders in legacy, which resides on an Exchange 2010. We have many users still using Outlook 2010 and all is worki...
Try CU23 to disable RPC encryption by default, you need to enable it manually:
powershell
Set-RpcClientAccess -Server <ServerName> -EncryptionRequired $true
Next, update Outlook 2010 to KB4011086 or above.