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Studio Pro installer fails with MSI error 1638 when a newer .NET Windows Desktop Runtime is already installed

Issue

When installing Studio Pro, the installer attempts to install the Microsoft Windows Desktop Runtime (any version) even though a newer patch version is already present on the machine. Instead of recognizing the newer patch version as satisfying the prerequisite, the Microsoft Installer (MSI) installation fails with MSI error 1638 (0x80070666).

Environment

  • Studio Pro (all versions)
  • Microsoft Windows

Cause

The failure is not caused by the .NET runtime itself, but by a crash in Mendix's runtime prerequisite detection mechanism when the installing user does not have write permissions to the directory containing the .NET checker executable.

Administrator rights are required to install Mendix Studio Pro on Mac (Beta), as informed in the documentation, System Requirements.

Solution/Workaround

To successfully install Mendix Studio Pro, use one of the following options:

  1. Install Mendix Studio Pro using an account with local Administrator rights.

    2. Running the installation with administrative privileges ensures that the .NET prerequisite check can complete successfully and correctly detect the installed .NET Desktop Runtime version.

  2. Use the Mendix Studio Pro Portable Version.

    • If Administrator rights cannot be granted, install and use the portable version of Studio Pro instead of the standard installer.

    • The portable version does not rely on the same installation workflow and avoids the prerequisite-check failure described in this article.

Internal information related

  • 287350
  • C0A5EDRD2/p1788869512323529

Additional information

Mendix Marketplace: Studio Pro

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