I have a customer with an issue with search function in Outlook resulting in No results found.
It's like this for all users on all RDSH Windows 2016 servers. I'm using loadbalancer (Win2016) and separate Exchange Server running on Windows 2012. Outlook is using online mode. Exchange server has been restarted with all services running well. Domain Controller network adapter was not showing domain connection but after restart of NlaSvc it did.
It was working fine until 3 days ago. No new updates have been installed for 20 days on any of the servers.