OMA Server Error in '/OMA' Application" Error Message When You View the Outlook Mobile Access Web Site

If you get the error message Server:

Error in '/OMA' Application.
Access to the path "Drive:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\Temporary ASP.NET Files\oma\4707b1f2\a6dd9810" is denied.

Follow steps on the website below or try the Microsoft 'Fix it':

http://support.microsoft.com/kb/818486