As noted in Steam Community discussions, the game often fails to write files because it lacks permissions.
Fortunately, there are several solutions to fix the 5MB error in Call of Duty: Advanced Warfare. Here are some step-by-step solutions:
It's possible that one of your core game files has become corrupted or is missing, contributing to the error. Steam has a built-in tool to check for and fix this.
: Setting the game's executable to run in compatibility mode for Windows 7 or 8 has resolved the crash for many.
For a step-by-step demonstration of these file and permission fixes: 02:51
Activision previously identified a networking conflict that triggers this specific "Out of memory/space" dialog.
This error is highly misleading. You could have 2 terabytes of open space on an enterprise-grade SSD, and the game will still claim you are short by a measly 5 megabytes. This happens because the error isn't actually about your hard drive or SSD capacity. Instead, it is an issue with how the game handles virtual memory allocation, administrative write permissions, and compatibility settings on modern operating systems. Why Does the 5MB Error Happen?