Report Builder 3.0 crashes on launch with problem event: CLR20r3


  • Description:
      Stopped working

    Problem signature:
      Problem Event Name: CLR20r3
      Problem Signature 01: msreportbuilder.exe
      Problem Signature 02: 10.50.1600.1
      Problem Signature 03: 4bb67a84
      Problem Signature 04: mscorlib
      Problem Signature 05:
      Problem Signature 06: 4e1511f4
      Problem Signature 07: 41bf
      Problem Signature 08: a3
      Problem Signature 09: System.UriFormatException
      OS Version: 6.1.7600.
      Locale ID: 1033
    Monday, April 9, 2012 2:03 PM


All replies

  • Hi,

    If you have downloaded the report builder on your machine, try removing ReportServer URL from menu->options and see if it works..

    If so then try to see your reportServer URL from IE.

    - Chintak (My Blog)

    Monday, April 9, 2012 2:18 PM
  • Changing that is what initially began crashing the program. I now cannot even get the Report Builder to load to make those changes. I have installed and uninstalled it twice now. Not sure what it is. 
    Monday, April 9, 2012 2:25 PM
  • Hi,

    Ok..then try deleting the files from

    C:\Users\<<User>>\AppData\Local\Microsoft\Report Builder\

    Note:- change <<user>> with your username...

    - Chintak (My Blog)

    Monday, April 9, 2012 2:49 PM
  • Thanks! Fixed as far as I can tell. 
    Monday, April 9, 2012 2:53 PM
  • Chintak,

    Your solution work !! i see there was a user.config file in C:\Users\<<User>>\AppData\Local\Microsoft\Report Builder\ folder. So what was the issue  and why it got resolved by deleting that file ?


    Piyush Patel

    Tuesday, September 4, 2012 9:37 AM
  • Thanks..

    Its working... :)

    Tuesday, July 14, 2015 6:10 AM
  • Most likely the config file was corrupted so it could not be read when the application is loading.  By deleting it, the application will not find a config file during launch and create a new one that is not corrupted.
    Friday, December 18, 2015 6:17 PM
  • This worked for me! Thank you!
    • Proposed as answer by CJeunelot Friday, February 17, 2017 2:29 AM
    Tuesday, March 22, 2016 4:00 PM
  • Hi 

    Thanks Your Solution worked 

    Monday, April 25, 2016 8:04 AM
  • Quick and easy solution, this also worked with Report Builder 3.0,

     It's weird because it was working fine yesterday.


    Wednesday, June 8, 2016 2:27 PM
  • Working. Thanks!
    • Edited by Tom Okila Friday, January 19, 2018 11:47 AM
    Friday, January 19, 2018 11:47 AM
  • Man, it works

    Thanks a lot 


    Wednesday, November 28, 2018 5:59 PM