“An exception of type Microsoft.SharePoint.Upgrade.SPUpgradeException was thrown. Additional exception information: Failed to call GetTypes on assembly Microsoft.Office.Server.Search, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c. Could not load file or assembly 'System.Web.DataVisualization, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.”

While running the product configuration wizard of Sharepoint foundation 2010, if you have come across the following error

“An exception of type Microsoft.SharePoint.Upgrade.SPUpgradeException was thrown. Additional exception information: Failed to call GetTypes on assembly Microsoft.Office.Server.Search, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c. Could not load file or assembly 'System.Web.DataVisualization, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.”

Here is the solution to overcome the issue,.

Open the SQL server configuration manager.Select the SQL Server Network Configuration and select the Protocols for MSSQLSERVER.

Make sure that TCP/IP protocol is enabled. If it is disabled, make it enable by right clicking on the TCP/IP ,Click on Enable option.

Hope this will help someone

-Cheers

Pradeepa Achar