You can repair the store using DISM online services. Open an Administrator Command Prompt and run: Dism /Online /Cleanup-Image /RestoreHealth Use code with caution.
Type the following command to start tracing: sxstrace trace -logfile:sxs_trace.etl sxsi x64 windows 8
Dism.exe /Online /Cleanup-Image /StartComponentCleanup /ResetBase Troubleshooting "sxsi" Errors You can repair the store using DISM online services
If you are currently trying to fix a specific error on your machine, let me know: What is the failing to launch? What error code or message shows up in your Event Viewer? Have you recently installed or updated any software? What error code or message shows up in your Event Viewer
By the time Windows 8 arrived (2012), the SxS technology was mature, complex, and fully integrated into the 64-bit ecosystem. For developers working on x64 Windows 8, understanding SxS isn't just about manifests; it's about memory layout, processor affinity, and the %windir%\WinSxS folder—which on a typical Windows 8 x64 machine can easily balloon to 15-20GB.