SAP Knowledge Base Article - Public

2250097 - .Net Framework update causes CR/BOE .NET SDK to look for a unique folder path to the Crystalreportsviewer13/14 folder in IIS and IISExpress


  • .Net Framework update causes Crystal Reports for Visual Studio to create a unique folder path to the Crystalreportsviewer13 folder in IIS and IISExpress DEV.
  • Each time the framework is updated by Microsoft Windows, it gets a new generated number X_X_xx\crystalreportviewers13.


  • Crystal Reports for Visual Studio 
  • Windows 7
  • Windows 8.x
  • Windows 2012 Server
  • Windows 2016
  • Windows 10
  • Businessobjects Enterprise Platform .NET SDK 4.x

Reproducing the Issue

  1. Install a new Microsoft Windows update.
  2. Notice that the path to crystalreportviewers13/14 has been chaged and a new .Net Framework related number has been generated in the path X_X_xx\crystalreportviewers13/14.


  • MS provide the update to .Net Framework (e.g: .Net 4.6) via Windows Update.
  • .NET web site will target the .Net 4.6 app pool, CR viewer will try to find the viewer resource file(js & icon) from ..\system_web\4_6_xx\crystalreportviewers13/14\
  • The xx is the small version of .Net Framework 4.6.
    • For example on Win10 RTM, it is 4_6_79;
    • on Win7+ it is 4_6_81,
    • if a user installed KB3098786 it will be 4_6_118x.
  • The version number will change again when the next KB update for .Net Framework 4.6 is installed.


The issue has been fixed:

Crystal Reports for Visual Studio SP20

Crystal Reports for Visual Studio SP21

BOE 4.0 - no fix available due to end of patch cycle

BOE 4.1 SP 10 or higher

BOE 4.2 SP 4 or higher

Any release after April 2017.


Manually update the Web.Config file to include the updated version of the Framework and then to copy the \CrystalReportsViewer13 folder into the new path: ..\system_web\4_6_xx\crystalreportviewers13\

See Also

Crystal Reports, Developer for Visual Studio Downloads


Crystal Reports for Visual Studio, cr for vs, \aspnet_client\system_web\4_X_xx\crystalreportviewers13\, 4.6 framework, iis, \aspnet_client\system_web\4_X, BOE .NET , KBA , BI-DEV-NET , BI Software Development Kits (SDKs) - .NET or Other , Problem


SAP Crystal Reports, developer version for Microsoft Visual Studio