The week numbers displayed in OWA do not match the week numbers displayed in Outlook for English users and French users in an Exchange Server 2007 environment

In a Microsoft Exchange Server 2007 environment, the week numbers that are displayed in Outlook Web Access (OWA) do not match the week numbers that are displayed in Microsoft Office Outlook. This issue occurs when you use the English version or the French version of OWA and Outlook. For example, if you use the English version OWA, week number begins at 2 for year 2010 instead of 1. However, it is different when you use the English version of Outlook.

Note This issue does not occur in an Exchange Server 2003 environment, because Exchange Server 2003 OWA provides an option to select when the week numbers start, the option name is First week of year.

To resolve this issue, install the following update rollup: After you install this update rollup, Exchange Server 2007 OWA provides an option to select when the week numbers start.

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

For more information about the client features in Exchange Server 2007 OWA, visit the following Microsoft website:For more information about how to display the week numbers in Outlook, visit the following Microsoft website: