Hey ac3E3 ,
Thanks for the detailed write-up and for listing what you’ve tried. We're sorry to hear you're experiencing game crashes. We understand this significantly impacts the gaming experience.
“Integrity Error 0x80000001” in Apex is almost always caused by Easy Anti-Cheat (EAC) integrity checks; perhaps that's why verifying Steam files alone often isn’t enough.
Here’s the fastest set of things to try for Windows 11 + Steam + Discord setups like yours.
1. Repair EAC service (most important step)
- Steam → Apex → Manage → Browse local files
- Open the EasyAntiCheat / EasyAntiCheat_EOS folder
- Run EasyAntiCheat_EOS_Setup.exe as Administrator
- Choose Apex Legends → click Repair Service
- EAC explicitly documents that games ship EasyAntiCheat_EOS_Setup.exe and it’s used to repair the Windows service.
- After that: reboot and test.
2. Eliminate overlays/hooks as a test
- Disable Discord in-game overlay (Discord acknowledges overlay reliability issues in some games).
- Disable Steam overlay temporarily for testing (Apex can run without it; just to isolate).
- Disable NVIDIA overlay if installed (GeForce Experience / NVIDIA App).
- Close any monitoring tools (RTSS/MSI Afterburner), controller mappers (reWASD/DS4Windows), virtual drives, etc. These are commonly cited triggers for Apex integrity errors.
- Test 2–3 matches after making changes.
3. Do a Clean Boot test
Since you describe a pretty clean install, this is a quick way to prove whether a background service is the trigger:
- Win + R → msconfig
- Services → Hide all Microsoft services → Disable all
- Startup → open Task Manager → disable all startup items
- Reboot → launch only Steam + Apex
- If the crashes stop, re-enable items in batches to find the culprit.
Thank you for posting, hope that helps.
