When publishing some applications, an unhandled “Data is not in ICO format.” exception is thrown in the Delivery Services/AppCenter Console.
Apply the following fix for your XenApp server platform version:
For XenApp 6.5 – CTX137747 – Hotfix DSCXAMx650W006 - For Citrix XenApp 6.5 AppCenter - English
For XenApp 6.0 - CTX139340 – LIMITED RELEASE - Hotfix DSCXAMx600W010 - For Citrix XenApp 6.0 Delivery Services - English
The icon format of the published application was not applying because of a limitation of the Citrix.IconConverter.dll. Attempts to publish certain applications in the Delivery Services Console/AppCenter can fail, resulting in the following unhandled exception:
"System.NotSupportedException: Data is not in ICO format"
[#LA2075]
Data is not in ICO format - Related Links and and Latest Fixes