System32 Drivers Bfadi.sys !!link!! Instant

Write-Up: Understanding bfadi.sys in System32\drivers

Topic: C:\Windows\System32\drivers\bfadi.sys

Q: Why did I never install Baidu software but still have bfadi.sys?

A: It may have been bundled with freeware such as video converters, PDF creators, or download managers. Always use "Custom Installation" to avoid such bundling.

How to Remove bfadi.sys (If Unwanted)

Removing a kernel driver improperly can crash your system. Follow these safe methods. system32 drivers bfadi.sys

How to Check if bfadi.sys is Safe on Your PC

Before taking any action, verify the file’s legitimacy.

Option B: You want to remove bfadi.sys (Uninstall Baidu AV)

Because this is a kernel driver, do not delete the file manually. You will cause boot errors. Write-Up: Understanding bfadi

Correct removal steps:

  1. Standard Uninstall:

    • Settings → Apps → Installed Apps → Find "Baidu Antivirus" → Uninstall.
    • Reboot.

  2. If the uninstaller fails or is missing:

    • Boot into Safe Mode (Shift + Restart → Troubleshoot → Advanced Options → Startup Settings → Safe Mode).
    • Navigate to C:\Windows\System32\drivers\
    • Rename bfadi.sys to bfadi.old (DO NOT DELETE – renaming breaks the dependency without crashing the OS).
    • Run msconfig → Services → Hide all Microsoft services → Disable any Baidu service.
    • Reboot normally.

  3. Clean up residual registry entries:

    • Open regedit (as Admin).
    • Search for bfadi and delete keys under:
      • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\
      • HKEY_LOCAL_MACHINE\SOFTWARE\Baidu