Outdated system components can cause DLL mismatches.
Few things are more frustrating than double-clicking a Steam game shortcut, expecting to dive into your favorite virtual world, only to be greeted by a cryptic pop-up window. Among the most common and vexing of these is the . steam-api64r.dll error
Add the following folders to your antivirus exclusion list: Outdated system components can cause DLL mismatches
The error usually reads something like: