If you are looking for a "link" to fix a sxsi error, it is likely that your application or system is failing for one of these reasons:

If the above methods do not work, you may need to replace the specific file from a reliable source. Note that sxs.dll is specific to the version and build of Windows.

Disclaimer: Always scan downloaded files with updated antivirus software. Summary Checklist

Many apps require specific SxS assemblies provided by Microsoft VC++ packages.

turn off parity. Forget this one step, and your Windows 8 machine will happily write the data, but your X68000 will just stare at you with a "SCSI Error" blink. Why Windows 8?