Missing Mortal Kombat X | Steam-api64r.dll
There is a 95% chance your Anti-Virus software quarantined or deleted the file. Anti-virus programs often flag modified DLL files (common in pirated versions) or sometimes even legitimate ones as "Crack/Gen" or "Trojan" threats.
Steam can check your game and automatically replace any missing or damaged files. steam-api64r.dll missing mortal kombat x
In rare cases, the error can be caused by: There is a 95% chance your Anti-Virus software
The Steam client service itself may be outdated. This does not delete your games. Steam can check your game and automatically replace