The PC version of Call of Duty: WWII has been taken offline due to security concerns related to remote code execution (RCE) hacks that allow unauthorized code execution on players' PCs. This issue has led to fears of malware installation and data breaches. The game's removal from online access has caused frustration among players, who criticize the lack of transparency from the Call of Duty team regarding the vulnerabilities. While the game is still available for installation on Xbox PC and the Microsoft Store, it is currently not accessible online. The Xbox version remains available, and concerns persist about the potential for similar vulnerabilities in other older titles.