Minecraft wiki entry for Crash, associated text: Though unlikely, unrelated software can conceivably cause crashing in games such as Minecraft. The most likely candidates are User Account Control (Windows), Gatekeeper (macOS), various types of Anti-Malware (i.e. Anti-Virus, Anti-Spyware, Firewall, etc.) software, which could either consume enough system resources to choke other resource hungry applications, or could cause issues as a result of their "Heuristic" real-time scanning. If the player recently installed an application such as AV software, they should try disabling it. If Minecraft stops crashing, they know the AV program is the perpetrator. The player can either remove it (not recommended for security reasons), or configure it to ignore Minecraft's folder and executable. If they are unsure of how to, they can look up some tutorials on the Internet. Alternatively, system processes can often consume a lot of resources (most infamously Windows 10). If there is too much system overhead, there is really not much one can do besides attempting to disable those processes or switch operating systems. Another certain crash is to set all the files in the .minecraft folder to read-only.