After upgrading to OnBase 10.0, I am no longer able to view my configured maps. I keep getting a 404 error.

[David_Coxe1]

The error that I receive is this:

  Server Error in '/OnBase' Application.
    "Could not load file or assembly 'Hyland.Applications.Web.ArcGIS' or one of its dependencies.  This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded"

I saw that my web page was set to use .NET Framework 2.0 SP1 and OnBase 10.0 uses .NET 4.0, so I changed it.

After an IISReset, I now have a new error:  "Page Cannot be Found  HTTP Error 404 "
     - the file or directory not found.

Why can't I see my maps?

[David_Coxe1]

To correct this error, the ArcGIS website must be updated to use .NET 4.0.

These steps will update the website:

1.       Update configuration options in default.aspx and web.config files in the arcgis virtual directory.
2.       Update website itself for use with .NET 4.0
3.       Install Microsoft Visual Web Developer 2010 Express (free download from Microsoft)
   1. Open the entire ArcGIS Website
   2. Message displays asking to update the site for .NET 4.0
   3. Acknowledge message to complete update
   4. Close Microsoft Visual Web Developer 2010 Express.
4.       Create new site in ArcGIS Manger
5.       Configure new site according to MRG for ArcGIS.

Once these steps are complete, the ArcGIS website will load properly.