We are migrating from Zimbra to Exchange. One nuance is that when people log into OWA for the first time it asks them for language and time zone. I want to set all users so that they are not asked that question. Tried the PS Script below but it is asking me for an "Identity"
Set-MailboxRegionalConfiguration -Language en-us -TimeZone "Mountain Standard Time"
Could someone please help me fill in the blanks. Or is there a setting in EAC that I can hard set the time zone?