http handler in webconfig issue

2 posts, 0 answers
  1. Suresh Krishna
    Suresh Krishna avatar
    30 posts
    Member since:
    Sep 2009

    Posted 06 Apr 2015 Link to this post

    Hi , I was trying with reporting and added report viewer to my project. Config file entires where created automatically.

    But i'm getting error saying. Unable to cast COM object of type 'Syste,_ComObject' to class type 'Telerik.Reporting.Vs.COmmon.AssemblyRefernce.'


    If you guys have any idea let me know. I have attacked the screen shots .


    Thanks in Advance,


  2. Stef
    Stef avatar
    3610 posts

    Posted 09 Apr 2015 Link to this post

    Hello Suresh,

    This is not a known issue to my knowledge.

    Please check the project settings and if they cover the minimum Telerik Reporting system requirements. Then run again the Upgrade Wizard and verify all files are updated correctly - you can use the check list in Upgrading Telerik Reporting Projects (Class Library project/Desktop application/Web application).

    Test also to remove the current viewer control and add it per How to: Add report viewer to a web page.

    If you need further help, please open a support ticket and send us the problematic project to check its settings.


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