sysfxui.dll - Analyze and How to Fix Errors

★★★★☆ Verified File (27.08.2026)

⚠️ Important Notice: Troubleshoot sysfxui.dll errors and optimize system performance with our expert guide. Manually replacing system libraries can brick future Windows updates or cause critical system failures.

Architecture:	other	️ Not detected
Antivirus scan	✅ Clean	No viruses detected.
Digital signature	🟡 Not signed	Signature missing. The file may have been modified.
Hash Integrity	ℹ️ Unverified	File Hash protection is missing.
File size	2.9 kb.	3001 bytes.

Hashes:

MD5: 372177a0f211d8011a1edc00ff2f5240
SHA-1: e94faa65b0870884b69f8e585d6459c9d98a95ce
SHA-256: 6840c91e984d5cd73fcc4af03790ef0a0e24c45b3965da0dd6fd754206d809d8
SHA-512: b43512282c8062e173efd8ea994c609b0ce938cb24667549ea2d64b9a082ccc9d11de99022c5b20b430bb20c0c0df31d43c62c229d2528642fc0cd504a552a10

To fix the sysfxui.dll error without downloading files from risky third-party websites, you must repair your existing system files. This error usually happens due to corrupted Windows files or software conflicts.

Run SFC and DISM Repairs

Windows has built-in tools to find and replace corrupted system files automatically.

Press the Windows Key.
Type cmd.
Right-click Command Prompt.
Select Run as administrator.
Type DISM.exe /Online /Cleanup-image /Restorehealth and press Enter.
Wait for the progress bar to finish completely.
Type sfc /scannow and press Enter.
Restart your computer after the scan ends.

Re-register the DLL File

If the file exists but Windows cannot read it, re-registering it fixes the link.

Open Command Prompt as an administrator.
Type regsvr32 /u sysfxui.dll and press Enter to unregister it.
Type regsvr32 sysfxui.dll and press Enter to re-register it.
Restart your PC.

Update or Reinstall Audio Drivers

The sysfxui.dll file is often tied to system audio effects (like Realtek or Conexant drivers).

Right-click the Start Menu and choose Device Manager.
Expand the Sound, video and game controllers section.
Right-click your primary audio device.
Select Update driver and choose Search automatically for drivers.
If the error persists, select Uninstall device instead, then restart your PC to let Windows reinstall it.

Perform a System Restore

If the error started recently, revert your system back to a working state.

Type Create a restore point in the Windows search bar and click it.
Click the System Restore button.
Choose a date before the error started appearing.
Follow the on-screen prompts and let the system reboot.

📊 Diagnostics Tool: Verify Your `sysfxui.dll` File

Worried that the file on your PC has been modified by malware? Drop it into the form below. Our script will verify its file size, cryptographic hash (MD5/SHA-1), and check for a valid Microsoft digital signature.

Other versions:
️ sysfxui.dll 10.0.19041.5072 64-bit (x64) | ️ sysfxui.dll 10.0.19041.5072 32-bit (x86)
Similar files:
️sysfxui.dll.mui