
Being new to the environment we're not sure whether this would help or is applicable given the behavior. Note that we have not run HCW after the update/reboot. Sometimes it's the user's own online archive mailbox, sometimes it's a shared online archive mailbox.Ĭlients are Outlook 2016 and current (2302/16130.20306) Looking at the Outlook Connection Status (CTRL-right-click Outlook system tray icon), the GUID in the message always correlates to an O365 online archive mailbox with an "Established" & the online archive mailbox can be browsed as expected. The only maintenance/change on the on-prem 2016 Exchange was we applied Security Update for Exchange Server 2016 Update 23 (KB5024296) & rebooted both mailbox servers on 3-16-23. 3-18-2023 several users (lets say 12 out of about 600+) starting getting a message stating "Allow this website to configure Regardless of whether they click "Allow" or "Cancel" and/or click "Don't ask." the message still pops up periodically and/or when launching Outlook & users Outlook behaves normally with the exception of the periodic message.

We just took over a hybrid Exchange 2016/O365 mail environment & are on a learning curve.
