Error opening Quest Knowledge Portal: "Server Error in QuestKnowledgePortal Application: HTTP 404 (4213611)

Error opening Quest Knowledge Portal: "Server Error in QuestKnowledgePortal Application:HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly.

Requested URL: /QuestKnowledgePortal/eurl.axd.a2d296e6a210e345b0df2295213f4350

This error occurs because when ASP.NET detects that a Web site hosting Quest Knowledge Portal is configured to use ASP.NET 4, a native component of ASP.NET 4 passes an extensionless URL to the managed portion of ASP.NET for further processing. However, if virtual directories that are below an ASP.NET 4 Web site are configured to use ASP.NET 2.0, processing the extensionless URL in this way results in a modified URL that contains the string "eurl.axd". This modified URL is then sent to the ASP.NET 2.0 application. ASP.NET 2.0 cannot recognize the "eurl.axd" format. Therefore, ASP.NET 2.0 tries to find a file namedeurl.axdand execute it. Because no such file exists, the request fails with anHttpExceptionexception.

1. Open the following node in the Windows registry on the computer hosting Quest Knowledge Portal application.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ASP.NET\4.0.30319.0

1. Create a newDWORDvalue namedEnableExtensionlessUrls.
2. SetEnableExtensionlessUrlsto 0. This disables extensionless URL behavior.
3. Save the registry value and close the registry editor.
4. Run theiisresetcommand-line tool, which causes IIS to read the new registry value.

http://www.asp.net/whitepapers/aspnet4/breaking-changes#0.1__Toc256770153