The file is not an official game file from Activision or Treyarch for Call of Duty: Black Ops 2 ; rather, it is a component typically associated with cracked or pirated versions of the game.
Avoid websites that offer "Free DLL Downloads." These files are often bundled with actual malware. Always use the built-in repair tools provided by your game launcher (Steam/Battle.net) to recover missing files.
When you encounter an error involving this file, it usually means your antivirus software has quarantined or deleted it because it flagged the file as a "Trojan" or "Hacktool." Common Solutions