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Fix 0x00001338 N (& More Errors) on Intel | MW4 Error Fix Guide


Published: Aug 21, 2026
Last Edit: Aug 21, 2026
176 Words, 1 Minute.

Watch the video:


Timestamps:
0:00 - Intro/Explanation
0:40 - Core Isolation
1:06 - CPU speed
1:38 - Fix 0x00001338 on Intel
3:30 - Fix 0x00001338 on AMD
4:35 - Reset MW4 settings

This is one of the most strange fixes I’ve ever heard of for fixing issues to any game, but it more than reliably fixes the 0x00001338 (0x723AC2A5) N (& other) errors I get when the game crashes on launch. MW4, Warzone and DMZ need some more work if intentionally lowing your CPU speed fixes issues…

Intel XTU: https://www.intel.com/content/www/us/en/download/17881/intel-extreme-tuning-utility-intel-xtu.html
Fix for unable to start XTU: https://www.intel.com/content/www/us/en/support/articles/000093813/processors/processor-utilities-and-programs.html

Questions answered in this video:
What does error 0x00001338 (0x723AC2A5) N mean in MW4?
Why does MW4 crash on launch on PC?
How do I fix 0x00001338 on an Intel CPU?
How do I fix 0x00001338 on an AMD CPU?
Can lowering my CPU clock speed stop Call of Duty crashes?
Why does Intel XTU say it is unable to start?
Do I need to turn off Core Isolation memory integrity for Intel XTU?
How do I reset MW4 settings to default?

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