I have known many interesting softwares which solving different kinds of problems but no one of theirs couldn't assist me yesterday. I was disappointed, but through some time my friend saved me. He suggested a tool, which settled my problems and should be useful for resolving similar troubles - Microsoft Excel this file is not in a recognizable format. 

From the My Keys and Downloads page, you'll see some tabs and a grid.  To access downloads for  our .NET tools (Windows Forms, ASP.NET, WPF, and Silverlight), click on the "NetAdvantage" tab.

The grid will now display all of your registered license keys for our .NET toolsets.  (You may also see some rows with a "Register Now" link, which means that a key is associated to your profile but not yet registered; I suggest clicking this link if you see it.) Click on the row corresponding to your registered license key for the version of the toolset you want to view downloads.

Once you select the grid row as described, the area beneath the grid will display a number of group boxes, with all of the available downloads.  The product installers are available in the "Produts & Bundles" section, and the service release installers are in the "Hot Fixes" section (this will likely be renamed to "Service Releases" in the near future).

The downloads are keyed to each person's specific member profile for security, and because of this I can't provide a direct link.  If you need more specific guidance, please let me know what product you're after, what platforms you're using, and whether you're after a volume release or service release - I'll be glad to help.

Hi Rajesh,

There were some known bugs that caused issues exactly like what you describe. Do you have the latest Hot Fix? If not, you can get it here: My Infragistics Keys and Downloads - Download Anything and Everything You Own