i have 4 exchange 2016 servers. OWA is published externally using adfs and wap.
recently, the following is happening on owa externally: error: Your request can't be completed right now. Please try again in a few moments.
whenever i open inbox items, this issue happens.
and when i try to search in the address book or send an email: it is giving make sure that your device is connected to the internet.
however, mail flow internally on owa is working. then issue is just externally.