Error Codes

The Reaper driver could not be mapped or started. Usually caused by Windows security blocking unsigned or mapped drivers.

• Complete System Setup — disable Defender, Memory Integrity, and Exploit Protection.
• Confirm Secure Boot is ON in msinfo32.
• Run the loader as Administrator.
• Disable Vulnerable Driver Blocklist: Win+R → regedit → HKLM\SYSTEM\CurrentControlSet\Control\CI\Config → set VulnerableDriverBlocklistEnable to 0 → reboot.
• Remove other cheat/spoofer drivers or kernel tools — they conflict with Reaper.

Another driver session is still active or a previous load did not clean up.

• Restart your PC fully (not Fast Startup — disable Fast Startup in Power Options).
• Close all other loaders, spoofers, and kernel tools.
• Run only one Reaper product loader at a time.

The loader does not have permission to load the driver.

• Right-click the loader → Run as administrator.
• Make sure you are on an Administrator Windows account.
• Move the loader out of protected folders (Desktop, Downloads, OneDrive).

The loader exits before you can enter a key or inject.

• Windows Defender or another AV quarantined the file — check Protection History and add an exclusion.
• Re-download the loader from Download after setup is complete.
• Install Visual C++ Redistributable (x64).
• Run as Administrator from C:\Reaper\ or similar simple path.

The loader cannot reach the auth server to validate your key.

• Check your internet connection and disable VPN/proxy temporarily.
• Allow the loader through Windows Firewall when prompted.
• Sync system clock — incorrect date/time breaks SSL.
• Retry in a few minutes if the auth service is under maintenance.

The loader cannot detect the game process.

• Open the game and reach the main menu / character screen before injecting.
• Make sure you launched the correct game build (Steam, Battle.net, etc.).
• For MW2/DMZ use WebLoader_MW2.exe if you have an All Access key.

Windows crashed to a blue screen during driver load or injection. Note the stop code if shown (e.g. SYSTEM_SERVICE_EXCEPTION, PAGE_FAULT_IN_NONPAGED_AREA).

• Complete full System Setup — incomplete setup is the #1 BSOD cause.
• Turn OFF Memory Integrity (Core Isolation) and reboot.
• Remove FaceIT AC, Vanguard (if not needed), and other kernel anti-cheats.
• Uninstall third-party spoofers or old cheat drivers — reboot between each removal.
• Update motherboard BIOS and chipset drivers to latest stable version.
• If BSOD persists, open a Discord ticket with your stop code and Windows build number.

PC freezes or reboots without a clear error — often driver conflict or unstable overclocks.

• Reset CPU/GPU/RAM overclocks to stock and test again.
• Disable XMP/EXPO temporarily to rule out RAM instability.
• Clean boot: disable startup apps and non-Microsoft services, then retry.

Your license key was rejected by the auth server.

• Copy-paste the key from your purchase email — no extra spaces.
• Make sure you are using the key for the correct product (MW2019 vs MW2 vs CS2, etc.).
• All Access / Master Key users: use Webloader.exe (MW2 uses WebLoader_MW2.exe).

Your key is locked to a different machine.

• Reset HWID on Key Management if you changed PC or reinstalled Windows.
• Do not spam HWID resets — wait for cooldown if shown.
• After spoofing, make sure you are not mixing Temp and Perm spoofer on the same session.

Your license time has run out.

• Check expiration on Key Management.
• Renew on the Store if needed.

The cheat could not attach to the game process.

• Be on the game main menu — not in a match loading screen.
• Close overlays: MSI Afterburner/Rivatuner, Discord overlay, GeForce overlay (test with overlays off).
• Run game and loader both as Administrator or both as normal — mismatch can fail.
• Verify game files on Steam/Battle.net after a game update.

Injection succeeded but the Reaper menu does not appear.

• Press Insert (default menu key) on the game window focused.
• Run the game in Borderless or Fullscreen Exclusive — not Windowed.
• Disable HDR and use native resolution.
• Re-inject after reaching the main menu if you injected too early.

SmartScreen blocked the loader from running.

• Click More info → Run anyway if you trust the download source.
• Add the loader folder to Defender exclusions after disabling real-time protection.

Core Isolation prevents kernel drivers from loading.

• Settings → Privacy & Security → Windows Security → Device Security → Core isolation → turn Memory integrity OFF.
• Reboot after disabling — the setting does not apply until restart.

Windows mitigations interfere with injection.

• Follow the Exploit Protection section in System Setup — disable all mitigations.
• Add the game and loader as exclusions if per-app toggles remain on.