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HTTP Error 500.19 - Internal Server Error after SharePoint 2010 In-place upgrade

Posted By:      Posted Date: August 31, 2010    Points: 0   Category :SharePoint
Hello We have done an SharePoint 2010 In-Place Upgrade. After the upgrade, we can access the Central Administration page without problems. However, when accessing the standard http port 80 site, the following error appears: Error Summary HTTP Error 500.19 - Internal Server Error The requested page cannot be accessed because the related configuration data for the page is invalid.   <fieldset><legend>Detailed Error Information</legend> Module IIS Web Core Notification Unknown Handler Not yet determined Error Code 0x80070032 Config Error The configuration section 'system.web.extensions' cannot be read because it is missing a section declaration Config File \\?\C:\inetpub\wwwroot\wss\VirtualDirectories\80\web.config Requested URL http://coolsharepoint:80/ Physical Path   Logon Method Not yet determined Logon User Not yet determined </fieldset> <fieldset><legend>Config Source</legend> 534: </location> 535: <system.web.extensions> 536: <scripting> </fieldset>

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