[Solved] Fix 0xfffff804 Windows - 5 Minute Method

Verified & Tested Updated February 14, 2026

Quick Summary

The error code 0xfffff804 on Windows typically occurs due to issues related to device driver problems or system file corruption, leading to system crashes or freezes. Resolving this error requires troubleshooting steps that aim at identifying and fixing the root cause, which could be a faulty driver, corrupted system files, or other software-related issues.

Common Causes

  • Device Driver Issues: Outdated, corrupted, or incompatible device drivers can cause the 0xfffff804 error, as they might fail to communicate properly with the operating system or other hardware components.
  • System File Corruption: Corruption in system files, which are crucial for the smooth operation of Windows, can lead to this error. Such corruption can occur due to malware, improper shutdowns, or software bugs.
  • Software Conflicts: Sometimes, conflicts between different software applications or between an application and the operating system can result in the 0xfffff804 error.

Step-by-Step Fixes

Method 1: Run a Virus Scan Show Steps ↓

To remove any malware that could be causing the error, run a full scan with your antivirus software. Ensure your antivirus software is updated before running the scan.

Additionally, check for any pending Windows updates as they often include fixes for known issues:

  • Go to Settings (Press Windows + I).
  • Click on Update & Security.
  • Click on Windows Update and then Check for updates.
  • Install any available updates and restart your computer if prompted.
Method 2: Update Device Drivers and Run System File Checker Show Steps ↓

First, ensure your system is updated with the latest drivers. You can do this by:

  • Going to Device Manager (Press Windows + X and select Device Manager).
  • Expanding each section, looking for devices with a yellow exclamation mark, which indicates a problem.
  • Right-clicking on devices with issues and selecting Update Driver.

For advanced users, consider running the Driver Verifier to detect and troubleshoot driver issues.

Next, run the System File Checker (SFC) to fix corrupted system files:

  • Open Command Prompt as Administrator (Right-click on Start and select Command Prompt (Admin)).
  • Type sfc /scannow and press Enter. This process may take several minutes to complete.
Method 3: Boot in Safe Mode and Perform a System Restore Show Steps ↓

If the issue persists, try booting your computer in Safe Mode to troubleshoot driver issues:

  • Restart your computer.
  • Press the F8 key repeatedly while booting.
  • Select Safe Mode from the Advanced Boot Options menu.

If booting in Safe Mode resolves the issue, it could indicate a driver problem. Proceed with updating drivers or using Driver Verifier for further diagnosis.

If the issue started after a recent software installation or update, you can try restoring your system to a previous point when it was working correctly:

  • Go to Control Panel (View by Category and click on System and Security, then System).
  • Click on System Protection on the left side.
  • Click on System Restore and follow the prompts to select a restore point.

Choose a restore point dated before the error started occurring and follow the on-screen instructions to complete the restore process.


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