🎮 Game Error Codes What it means & how to fix it

Cyberpunk 2077 Error Codes

Cyberpunk 2077's problems are mostly startup crashes and CPU/driver mismatches rather than server codes. EXCEPTION_ACCESS_VIOLATION and 0xC000001D point at corrupted files, overclocks or an unsupported CPU instruction, the 'Flatlined' error is a general crash-to-desktop, CE-34878-0 is the PlayStation application-crash code, and MSVCP140_1.dll missing means a runtime is absent. Patch 2.x plus the newest GPU drivers reintroduced DLSS/frame-gen crashes too. Here's what each common error means and the fastest fix.

Error codes

EXCEPTION_ACCESS_VIOLATION The game tried to access memory it shouldn't and crashed

Cause: Corrupted or incomplete game files, an unstable overclock, a conflicting overlay/mod, or a driver problem.

Fix:
  1. Verify/repair the game files in Steam, GOG or the Epic launcher.
  2. Return any GPU/CPU overclock to default settings.
  3. Disable overlays and recording apps, and update your GPU driver with a clean install.
0xC000001D (illegal instruction) The CPU hit an instruction it can't execute

Cause: An older CPU that lacks a required instruction set, or a corrupted/overclocked configuration.

Fix:
  1. Update Windows and your chipset/CPU drivers.
  2. Remove CPU overclocks and reset to stock clocks.
  3. Verify game files; if the CPU genuinely lacks the instruction set, a community launch-arg fix may be required.
Flatlined error / crash to desktop The game crashed back to the desktop

Cause: A catch-all crash from driver issues, background apps, DLSS/frame-gen on new drivers, or corrupted files.

Fix:
  1. Update to the latest GPU driver (or roll back if a brand-new driver started the crashes) and do a clean install.
  2. Disable DLSS Frame Generation and lower graphics settings to test stability.
  3. Close background/recording apps and verify game files.
CE-34878-0 The application crashed (PlayStation)

Cause: A generic PlayStation crash code — usually outdated system/game software or a corrupted install.

Fix:
  1. Update the console system software and the game to the latest version.
  2. Close and restart the game; rebuild the PS database in Safe Mode if it recurs.
  3. Delete and reinstall the game if crashes persist.
MSVCP140_1.dll missing A required runtime library is missing

Cause: The Microsoft Visual C++ Redistributable packages aren't installed or are corrupted.

Fix:
  1. Install both the x86 and x64 Microsoft Visual C++ Redistributable packages.
  2. Verify game files to restore any removed DLLs.
  3. Reinstall the redistributables if the DLL error persists.

Fixes that work for most Cyberpunk 2077 (PC, PlayStation, Xbox) errors

  1. Check the game's server status first (official status page, or the studio's support/X account) — most named connection errors are a maintenance window or outage, and no local fix will help until servers are back.
  2. Restart the game and your PC/console, and power-cycle your router — a fresh connection clears the majority of temporary login and connection errors.
  3. On PC, allow the game and its launcher through your firewall and antivirus, and disable any VPN or proxy — these block the authentication handshake behind many 'can't connect' codes.
  4. Verify/repair the game files (Steam: Properties -> Installed Files -> Verify; launcher: repair) if the error points at a corrupted install or update.
  5. Update your GPU driver (do a clean install with DDU if needed) and install the latest Microsoft Visual C++ Redistributables — missing runtime files and stale drivers cause most launch crashes.

FAQ

How do I fix EXCEPTION_ACCESS_VIOLATION in Cyberpunk 2077?

This crash comes from corrupted files, an unstable overclock, a conflicting overlay/mod or a driver problem. Verify/repair the game files in your launcher, return any GPU/CPU overclock to default, disable overlays and recording apps, and update your GPU driver with a clean (DDU) install.

What causes the Cyberpunk 2077 Flatlined error?

'Flatlined' is a general crash-to-desktop. It's often driver-related — patch 2.x with the newest NVIDIA/AMD drivers reintroduced DLSS and frame-generation crashes. Update (or roll back) to a stable GPU driver with a clean install, disable DLSS Frame Generation to test, close background/recording apps, and verify the game files.

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