Visit the official Microsoft website and download the pack (specifically ensuring the 2010, 2012, and 2013 x86/x64 versions are repaired or updated).
If the Steam verification fails (e.g., if you are running a standalone version of the game that isn't linked to your Steam library) and the file is not in quarantine, you may need to place the file manually. steamapidll resident evil 6 download fix
Sometimes, the error is not isolated to one file but stems from a broader corruption of the Steam client itself. Visit the official Microsoft website and download the