Open the Windows Start Menu, type , and press Enter.
: Right-click the game, select Properties , and type -force-d3d11 into the Launch Options text box.
Happy modding, and may your frames be high and your error logs empty.
The game may crash if Windows blocks it from writing save data or reading game folders. Navigate to your main game installation folder. Right-click Koikatsu.exe (or InitSetting.exe ). Select , then open the Compatibility tab. Check the box for Run this program as an administrator . Click Apply and launch the game. Whitelist in Windows Defender / Antivirus
: Koikatsu is notorious for high RAM usage, especially when modded. If you have 8GB of RAM or less, increase your Windows pagefile size to at least 20GB to prevent "Access Violation" errors caused by memory exhaustion. koikatsu crash fix
If you have Koikatsu Party on Steam:
Try reducing the graphics settings in-game:
If you own Koikatsu Party on Steam:
Locate and set it to match your monitor's refresh rate (e.g., 60 FPS or 144 FPS ). Ensure V-Sync is set to Fast or On . 5. Summary Troubleshooting Checklist Open the Windows Start Menu, type , and press Enter
If your game crashes only when you load a specific custom character card or scene, the card likely uses assets you do not own. Use KKManager to Find Missing Mods
Sometimes, the game's settings might be too high for your system to handle, leading to crashes. Try lowering the graphics settings in-game to see if that resolves the issue.
Antivirus programs often flag the game's executable files or mod injectors as false positives, silently deleting or blocking them.
: He went into his GPU settings, forcing the game to acknowledge his high-end card instead of the weak integrated chip it had been trying to use. The game may crash if Windows blocks it
If your game is crashing immediately on launch and none of the above fixes the issue, your game files might be corrupted by a bad mod installation. The cleanest way to fix an unstable, heavily modded game is a fresh install using the community-standard .
If you are crashing right now, follow this order:
This guide addresses common causes and fixes for " Koikatsu Party
Remove half of your plugins from the BepInEx/plugins folder. If the crash stops, the issue is in the removed half. Repeat until you find the specific file.