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How can I fix an error identified as side by side configuration is incorrect?

Dennis White 0 Reputation points
2025-12-30T14:49:15.5833333+00:00

While trying to load a downloaded application if fails because "side by side configuration is incorrect.

Windows for home | Windows 11 | Performance and system failures
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  1. DaveM121 878.9K Reputation points Independent Advisor
    2025-12-30T15:24:48.7466667+00:00

    The 'Side by Side Configuration' error usually indicates that app requires a version of the C++ Redistributable that is not installed on your PC, it would be best to ask the support for that app on their website what version of the C++ Redistributable their app requires, then you can download and install that from this link, please note, you must install both the x86 and x64bit version of the required C++ Redistributable.

    https://learn.microsoft.com/en-us/cpp/windows/latest-supported-vc-redist?view=msvc-170

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  2. AI answer

    2025-12-30T14:49:25.37+00:00

    To fix the error identified as "side by side configuration is incorrect," you can follow these steps:

    1. Check the Application Manifest: Ensure that the application has a valid manifest file that specifies the correct dependencies. The manifest can be embedded in the application binary or stored as a separate file in the application folder.
    2. Install Required Assemblies: If the application depends on a side-by-side assembly that is not installed, you need to install it. You can check for missing assemblies using tools like the Dependency Walker.
    3. Verify Installation Locations: Make sure that the required assemblies are either installed as private assemblies in the application folder or as shared assemblies in the %WINDIR%\WinSxS\ folder.
    4. Reinstall the Application: Sometimes, simply reinstalling the application can resolve configuration issues.
    5. Check for Policy Files: If there are any policy files that redirect assembly versions, ensure they are correctly configured to point to the installed versions of the assemblies.

    By following these steps, you should be able to resolve the "side by side configuration is incorrect" error and successfully load the application.

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