As my colleague Tess told a while ago, sometimes the problems seems to come in bunches; so it happened that I saw the following error message from two different customers in less than a week… Server Error in ‘/’ Application. Configuration Error Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. Parser Error Message: This config section already contains an identical line, which is not allowed.Source Error: Line 350:   extension=".js" Line 351:      type="Microsoft.JScript.JScriptCodeProvider, Microsoft.JScript,    Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" /> Line 352:   </compilers> Line 353: Line 354:   <assemblies> Source File: c:\windows\microsoft.net\framework\v1.1.4322\Config\machine.config    Line: 352 Unfortunately this error message is a bit misleading, and you get this problem if you run multiple installations of a Device Update for Outlook Mobile Access (OMA), without have first uninstalled previous versions of this update. To resolve the problem, open your machine.config file and check line #359 and #367 (please note that the line numbers may vary a bit, depending if you have installed other components which have changed your machine.config):– line 359: assembly=”System.Web.UI.MobileControls.Adapters,Version=1.0.0.0,Culture=neu­tral,PublicKeyToken=b03f5f7f11d50a3a” /> – line 367: assembly=”System.Web.UI.MobileControls.Adapters,Version=1.0.0.0,Culture=neu­tral,PublicKeyToken=b03f5f7f11d50a3a” /> Both lines should be the same. Next, remove the section that…