C++ IDE code editor structure windows is blank on Windows 10 machine - workaround

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Several developers reporting an issue where the C++Builder IDE code editor structure window was blank after they upgraded their Windows machine to Windows 10. The issue is reproducible on these scenarios:

  • The user has a machine with a Windows version lower than Windows 10 (Windows 8.1, 8, 7,...)
  • The user has RAD Studio installed (all versions are affected)
  • The user upgrades to Windows 10

In our R&D testing, we have reproduced the issue on 2 machines after upgrading to Windows 10

  • Windows 7-32 bit with XE8 Update 1 installed
  • Windows 8.1-64 bit with XE9 23.0.20488.2497.1 installed

Once the upgrade to Windows 10 has finished, the structure pane for C++ applications is blank.

Microsoft has noted the issue with J# 2.0 on Windows 10. The workaround is:

  1. Uninstall the Microsoft Visual J# 2.0 Redistributable Package
  2. As the uninstaller is broken, you must enter into the registry and delete all the entries with 'J#'
  3. Reboot the machine
  4. Install the Microsoft Visual J# 2.0 Redistributable Package:
    • 32bit: http://www.microsoft.com/en-us/download/confirmation.aspx?id=4712
    • 64bit: http://www.microsoft.com/en-us/download/confirmation.aspx?id=15468
  5. Reboot the machine

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David Intersimone (known to many as David I.) is a passionate and innovative software industry veteran-often referred to as a developer icon-who extols and educates the world on Embarcadero developer tools. He shares his visions as an active member of the industry speaking circuit and is tapped as an expert source by the media. He is a long-standing champion of architects, developers and database professionals and works to ensure that their needs are folded into Embarcadero's strategic product plans. David holds a bachelor's degree in computer science from California Polytechnic State University at San Luis Obispo, California.


  • Isaac C59878
    Isaac C59878 Friday, 23 February 2018

    Didn't work for me. Installed RAD Studio 10.2.2 Tokyo on Windows 7 PC and have blank Structure window. Uninstalled J# 2.0, removed registry entries, restarted, installed J# 2.0 redistributable, restart. Still blank.

  • Vassiliki T56114
    Vassiliki T56114 Monday, 8 January 2018

    Thank you! The article was very useful to me.

  • GeoffGrime
    GeoffGrime Wednesday, 16 September 2015

    VERY useful. Many thanks for this obscure bit of workround which got me out of a (blank) hole in XE4.

  • gad L7786
    gad L7786 Saturday, 15 August 2015

    Can you please consider recording the J# bits into Delphi. We all know this is legacy from previous times where .NET was considered a viable option but nowadays (luckily) Emba is focused on pure native development and the dependency on J# is not very acceptable any more.

    I can live with the .NET 3.5 dependency for the msbuild tool but J# is not something I can easily understand.

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