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An error occurred during install of assembly 'Microsoft.VC90.ATL,..' How do I solve this?



  • Ray Sleeper

    This doesn't work.

    I have updates turned off and rebooted several times.


  • Ben Marolt

    I kept getting this error trying to use the MSI installer, too. DotNetFix Microsoft installer troubleshooting tools, CCleaner, none of the suggestions I found online had any effect. So instead, I right-clicked the setup.exe and chose Run As Administrator, and the installation completed successfully.

  • Werner Stricker

    I tried all the things suggested in the comments above, but still get the error message. How do i fix this? Please advise.

  • DesignSpark Mechanical

    FOR WINDOWS 7 users: should you continue to face the same issue, please run the 'System Update Readiness tool' issued by Microsoft.

  • Kip Mussatt

    The 14 May entry doesn't go to the page you say it does.


    The 31 May entry goes to a link, the updated fix runs, but doesn't fix the problem.

  • MARK

    Windows 7.

    Uninstall microsoft visual c++ 2008, there might be several in the list.

    • Use Windows Installer Clean up.
    • Open regedit, find the following key:


    • Take ownership and rename it (keep in case of hiccups).
    • Now download and install microsoft visual c++ 2008.


    Windows services.

    • Set 'Windows Module Installer' to manual and start it.


    Designspark Mechanical should now install swiftly.

    I am grateful for this fantastic software, so I hope I helped you.


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