is possible for me - as O365 Global admin - clear autocomplete cache in OWA for some user/s? Ideally with Powershell?
- or -
is possible set OWA to preffer GAL before AutoComplete in suggested address list during composing new message?
We are renaming all users in whole tenant and want users see new names in suggested list.
Not with "pure" PowerShell, but you can use an EWS-based script such as the one here: https://gallery.technet.microsoft.com/Clearing-AutoComplete-and-92b8d32a