Legacy configuration may still exist on the OWA virtual directory. In Exchange Server 2007, administrators could change values so that users would not be prompted for language or time zone preferences on their first logon attempt. For example, administrators could set value 1033 for English as follows:
When the OWA virtual directory is configured by using a value other than 0 (zero) for DefaultClientLanguage and LogonAndErrorLanguage, the language attributes on the mailbox are not updated. Additionally, if the time zone is not set in the regional configuration for Exchange Server 2010, the user may receive the error that is mentioned in the "Symptoms" section. These values are required for the Exchange Control Panel to work correctly.
Although these cmdlets are still accepted by Exchange Server 2010 virtual directories, the cmdlets are considered legacy settings. Therefore, we recommend that you use the Set-MailboxRegionalConfiguration cmdlet in Exchange Server 2010. For example:
Method 1Set a time zone value for the user:
Method 2If you have multiple affected users, set the default client language and logon error language to 0 on the virtual directory. However, be aware that this value is considered a legacy attribute. Although it can be used in Exchange Server 2010, the Set-MailboxRegionalConfiguration is preferred:
Article ID: 2971274 - Last Review: 30 May 2014 - Revision: 1