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Windows Error SxS-Error — Side-by-Side Configuration Error

Warningapplication

Overview

Windows Side-by-Side Configuration error means the application requires a specific version of a runtime library that is missing or corrupted.

Key Details

  • SideBySide error — assembly dependency failure
  • Application manifest requests specific DLL versions
  • Common with C++ applications and games
  • Event Viewer SideBySide entries show exact missing assembly

Common Causes

  • Missing Visual C++ Redistributable package
  • Corrupted manifest file in the application
  • Conflicting DLL versions installed
  • Application built with unsupported runtime version

Steps

  1. 1Install all Visual C++ Redistributable versions (2005 through latest)
  2. 2Check Event Viewer > Application for SideBySide error details
  3. 3Reinstall the affected application
  4. 4Repair Visual C++ installations from Programs and Features

Tags

windowsapplicationside-by-side configuration errorwindows-errorfix

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Frequently Asked Questions

A Windows system that allows multiple versions of the same DLL to coexist and be loaded as needed.