8.13. Forcing Users to Use a Specific OWA Theme
Problem
You want to restrict your users to a specific theme or set of themes in Outlook Web Access.
Solution
Using a graphical user interface
Log on to the Exchange Server computer.
Open Regedit and navigate to the key HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeWeb\OWA\Themes.
Create a new value named DefaultTheme. Its value should be the theme ID of the default theme you want displayed for your users. The ID value must be a number that corresponds to an existing theme directory (as discussed in Recipe 8.12); if you haven't created any of your own themes, you can use one of the themes that ship with OWA by entering the number between 0 through 4.
Repeat steps 1-3 for each Exchange front- and back-end server; for the default change to be effective, you must apply it to all servers in the organization.
Alternatively, you can use the OWA Web Administration tool:
Download and install the Outlook Web Access Web-based Administration tool from:
http://www.microsoft.com/downloads/details.aspx?FamilyID=4bbe7065-a04e-43ca-8220-859212411e10&displaylang=en Navigate to the virtual directory created by the Administration tool. This directory can be accessed at https://machinename/OWAAdmin, where machinename is the machine where OWAAdmin has been installed.
Scroll down to the Customization section and click Apply a default theme to this server.
Select the theme you want users to see when they use Outlook Web Access. If you choose a theme, ...