Uninstall the game through Steam or the Windows Control Panel.
Follow these troubleshooting steps in sequence to resolve the issue safely. 1. Check and Restore from Windows Defender Quarantine
Look for a recent item flagged as a severe threat or blocked app around the time you tried launching or installing the game. Click on the action dropdown menu and select . 2. Create an Antivirus Exclusion Folder
Before downloading any files from the internet, check if your native security software already has the file locked away.
If you are facing this launch barrier, work through the following solutions sequentially to restore your game functionality. 1. Check and Restore from Antivirus Quarantine
A sudden crash during a game update, a failing hard drive, or an interrupted installation can cause the file to become corrupted or fail to download entirely.
Using the buddha.dll cheat tool in the official multiplayer mode is a direct violation of the Call of Duty: Black Ops II Terms of Service. Activision's anti-cheat systems can detect these modifications. The consequences for players found using them can include permanent online bans for both the game account and the player's hardware ID, effectively barring them from playing official servers ever again.