Change Mailbox Language
Problem: Your installation language is Dutch, and some of the Outlook folders are English.
If the parameter “outlook.exe /resetfoldernames” is not working.
(You probably created the mailbox on Exchange 2003 and moved this mailbox from exchange 2003 to exchange 2010)
Use this PowerShell line on the Exchange 2010 server;
get-mailbox “username or full name” | set-mailboxregionalconfiguration -Language nl-NL -DateFormat “d-M-yyyy” -TimeFormat “H:mm” -LocalizeDefaultFolderName:$true
Tags: Exchange 2003; Exchange 2010; Outlook 2003; change; language; folders;