How to Fix Physxloader.dll Is Missing or Not Found Errors

A troubleshooting guide for physxloader.dll errors

Physxloader.dll errors are caused by the removal or corruption of the physxloader DLL file. This particular file is associated with the PhysX physics engine from NVIDIA. The errors could be due to problems with the Windows registry, a computer virus or malware issue, or even hardware failure.

Information in this article applies to all Microsoft operating systems, including Windows 11, Windows 10Windows 8Windows 7Windows VistaWindows XP, and Windows 2000.

Physxloader.dll Errors

Physxloader.dll error messages are most likely to appear when playing certain video games. Here are some common errors you might see:

  • Physxloader.dll Not Found
  • This application failed to start because physxloader.dll was not found. Re-installing the application may fix this problem.
  • Cannot find [PATH]\physxloader.dll
  • The file physxloader.dll is missing.
  • This program can't continue because physxloader.dll is missing from your computer
  • Cannot start [APPLICATION]. A required component is missing: physxloader.dll. Please install [APPLICATION] again.

How to Fix Physxloader.dll Errors

Try these solutions in order until the problem is fixed:

Do not download the physxloader.dll file from a DLL download website. There are several reasons why downloading a DLL file is usually a bad idea. If you need a copy of this file, it's best to obtain it from its original, legitimate source.

You may need to start Windows in Safe Mode if you're unable to access Windows normally due to the error.

  1. Download the PhysX System software from NVIDIA and install it on your PC to replace the missing or corrupted physxloader.dll file. Be sure to restart your computer after the installation.

    If the error occurs while playing a particular game, check the game's installation folder for a version of the PhysX System software.

  2. Restore the file from the Recycle Bin. If you suspect that you've accidentally deleted physxloader.dll, you might be able to restore it from the Recycle Bin, but only if you haven't already emptied it. If so, try using a data recovery program.

    Recycle bin on the Windows 10 desktop

    Only recover a deleted physxloader.dll file if you're positive that you deleted it yourself and that it was working fine prior to doing so.

  3. Run a virus/malware scan. The error you're seeing could be related to a virus or even a hostile program masquerading as the real file.

  4. Use System Restore to undo recent system changes. If you suspect the error was caused by recent changes made to an important file or configuration, System Restore could be helpful.

  5. Reinstall the program that uses the physxloader.dll file. If the error occurs when you use a particular program, reinstalling the software should replace the missing file.

    Most physxloader.dll issues are caused by problems with the Steam client. If reinstalling Steam doesn't fix the problem, the Steam Community forum has instructions for repairing game files.

  6. Update hardware drivers. Update drivers for hardware devices that might be related to physxloader.dll. For example, if you see the "physxloader.dll is missing" error when you play a 3D video game, try updating the drivers for your video card.

    Update driver option on the Windows Device Manager menu
  7. Roll back your drivers. If the physxloader.dll error began after updating a particular hardware device, roll back the device drivers to an older version.

  8. Perform a Windows Startup Repair to restore all Windows DLL files to their working versions.

  9. Use a free Windows registry cleaner to remove invalid physxloader.dll registry entries that might be causing the error.

  10. Perform a clean install of Windows as a last resort to start with a fresh copy of the operating system.

    Windows installation screen

    All the information on your hard drive will be erased during a clean install.

  11. Use a free memory testing tool or a hard drive testing program to check for hardware-related DLL errors.

    If the hardware fails any of your tests, replace the memory or replace the hard drive as soon as possible, or take your PC to a professional computer repair service.

Was this page helpful?