: Locate your game installation folder. Copy the contents of the Update 1 folder and paste them into the main directory, selecting "Replace" for all files.

When Treyarch released Black Ops II in November 2012, the PC version launched with several bugs:

: Using modified versions of game code is a direct violation of the Activision Security & Enforcement Policy . Players caught using modified game profiles or code are subject to permanent bans from online play, as well as resets for all stats and leaderboards.

A: Yes, the updates ensure continued compatibility with online multiplayer services.

Make sure your base game isn't corrupted before applying the patch. Admin Rights: Always right-click and "Run as Administrator". Compatibility: If you're on a newer OS, try setting the to Windows 7 Compatibility mode.