If you have launched 007 First Light and encountered the message “Reflex Failed to Initialize Watchdog – Error 0xC035001E” alongside a Hypervisor Error Not Available notification, you are dealing with a direct conflict between NVIDIA Reflex’s watchdog initialization system and the Windows hypervisor stack. The error code 0xC035001E specifically indicates that the Reflex watchdog component attempted to access hypervisor resources and received a not available response, meaning the required virtualization layer is either occupied by Windows or blocked by security features.

This guide covers every verified fix for the 007 First Light Reflex Failed to Initialize Watchdog 0xC035001E Hypervisor Error Not Available on Windows PC.

What Causes 007 First Light Reflex Watchdog 0xC035001E Hypervisor Error Not Available

  • Hyper-V holding exclusive control of the CPU virtualization layer needed by Reflex watchdog
  • Memory Integrity and VBS blocking the Reflex watchdog driver from accessing hypervisor resources
  • Windows Hypervisor Platform occupying the virtualization layer required by the watchdog
  • Secure Boot preventing the Reflex watchdog driver from loading at the kernel level
  • AutoLoadHV boot entry pre-loading the Windows hypervisor before Reflex can initialize
  • Virtual Machine Platform maintaining active hypervisor hooks that return not available responses
  • WSL 2 holding the hypervisor open and returning unavailable to Reflex watchdog queries
  • Outdated NVIDIA drivers causing the Reflex component to fail its hypervisor availability check

How to Fix 007 First Light Reflex Watchdog 0xC035001E Hypervisor Error Not Available

Fix 1: Disable Hyper-V Through BCDEdit

The 0xC035001E not available error directly indicates the hypervisor layer is occupied. Stopping Windows from loading its hypervisor at boot frees the virtualization resources that Reflex watchdog requires.

Steps:

  • Right-click the Start button and select Windows Terminal (Admin) or Command Prompt (Admin)
  • Type the following command and press Enter: bcdedit /set hypervisorlaunchtype off
  • Wait for the success confirmation message
  • Do not restart yet — continue to Fix 2 first

Fix 2: Remove All Hyper-V Related Windows Features

Steps:

  • Press Win + R, type optionalfeatures, and press Enter
  • Locate and uncheck the following: Hyper-V, Windows Hypervisor Platform, Virtual Machine Platform
  • Click OK and allow Windows to process the feature removal
  • Do not restart yet — proceed to Fix 3

Fix 3: Disable Memory Integrity and VBS

Memory Integrity and VBS maintain an independent hold on the hypervisor layer that causes the 0xC035001E not available response even after Hyper-V is removed. Both must be explicitly disabled for Reflex watchdog to access the hypervisor successfully.

Steps:

  • Press Win + I and navigate to Privacy and Security, then Windows Security
  • Select Device Security and click Core Isolation Details
  • Toggle Memory Integrity to Off
  • Press Win + R, type gpedit.msc, and navigate to: Computer Configuration, Administrative Templates, System, Device Guard
  • Set Turn On Virtualization Based Security to Disabled
  • Click Apply and OK

Fix 4: Disable Secure Boot in BIOS

Secure Boot prevents the Reflex watchdog driver from loading its hypervisor access component at the kernel level, causing the 0xC035001E not available error at the driver initialization stage.

Steps:

  • Restart your PC and enter BIOS/UEFI using F2, Delete, F10, or F12
  • Navigate to the Security or Boot tab
  • Locate Secure Boot and set it to Disabled
  • Save your changes and exit BIOS

Fix 5: Shut Down WSL 2 and Clear AutoLoadHV Boot Entry

Steps:

  • Open Windows Terminal as Administrator and run: wsl –shutdown
  • Open Command Prompt as Administrator and run separately: bcdedit /set {current} hypervisorlaunchtype off bcdedit /deletevalue {current} hypervisorlaunchtype
  • Confirm both commands return success messages
  • Restart your PC fully after this step

Fix 6: Update NVIDIA Drivers

An outdated NVIDIA driver causes the Reflex watchdog component to perform incorrect hypervisor availability checks, producing the 0xC035001E error on otherwise compatible configurations.

Steps:

  • Download the latest NVIDIA GPU driver from NVIDIA’s official website
  • Download DDU and perform a clean driver removal in Safe Mode
  • Install the new driver with Clean Installation selected
  • Restart your PC after installation completes
  • Relaunch 007 First Light and check whether the watchdog error persists

Fix 7: Verify Game Files and Launch as Administrator

Steps:

  • Open Steam, right-click 007 First Light, go to Properties, then Local Files
  • Click Verify Integrity of Game Files and wait for completion
  • After verification, right-click the game shortcut and select Run as Administrator
  • Click Yes when prompted and allow the game to load fully

Conclusion

The 007 First Light Reflex Failed to Initialize Watchdog 0xC035001E Hypervisor Error Not Available is a direct conflict between the Reflex watchdog driver and the Windows hypervisor stack. Start with Fix 1 through Fix 3 in sequence since disabling Hyper-V, removing related features, and turning off Memory Integrity together address every layer of the 0xC035001E not available response. Work through the remaining fixes if the error persists. With the hypervisor stack cleared and NVIDIA drivers updated, the Reflex watchdog will initialize without the 0xC035001E error appearing again.