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A definitive checklist for fixing a Memory Access Violation.


Metaldead

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For over 3 years I've had massive issues with Fallout 3 and frequent App Crashes due to Memory Access Violations, otherwise known as c000005.

Today I've compiled one of the most complete lists with the best fixes, both widely known and unknown. I hope people can profit from this as I know I have.

 

Verify your game cache.

Run Fallout 3 in XP S3 compatibility mode, with Visual Themes and Desktop Composition disabled.
Enable FFDSHOW compatibility with FO3, and/or uninstall FFDSHOW in its entirety.
Control Panel > Programs > Default Programs > Set Your Default Programs > Set .ogg files to run with Windows Media Player.
Fallout.ini fix. Add bUseThreadedAI=1 and iNumHWThreads=2 under [General]
Make sure FalloutDefault.ini is not overwriting your Document .ini.
Use Fake Fullscreen and run the game in Windowed mode. http://www.nexusmods.com/fallout3/mods/19376/?
Set Water Multi-Sampling to Low.
Only use mod loaders to install mods, and exit them before playing. Launch your game via the .exe, or dedicated external launchers such as FOSE.
Use Large Address Aware to allow FO3 to utilize more than 2G of RAM. http://www.nexusmods.com/fallout3/mods/6510/?
Run a few MemTest86 scans to rule out the possiblity of your RAM causing the issue.
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