ost file, but only going back as far as 3 or 4 months ago.Ĭached mode is set to have all mail downloaded it is worth noting. I'm 600 mailboxes into the migration, and I'm starting to get users complaining about being unable to search Outlook.Īll of the Outlook clients are in cached mode by default.ĭuring my investigation I'm seeing that whilst in cached mode performing a search eventually times out with the 'Something went wrong and your search couldn't be completed', 'It looks like there is a problem with your network connection'Ĭlicking the 'Let's look your computer instead' link will return results contained in the local. I'm in the process of migrating my orgs email infrastructure from Exchange 2013 to Exchange 2019Īll new Exchange servers are running 2019 CU6, the Outlook client is the latest Office 365 click to run version, latest updates applied.