Apps & runtime · medium

How to fixDLL-NOT-FOUND

DLL file not found

What this error means

DLL file not found is a medium-severity software runtime issue. The application cannot find the required DLL and will not start. It's most often caused by missing redistributable packages, deleted DLL and malware. See the troubleshooting steps below for the fix.

Before you begin

Save open work and back up important files. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.

Work through these checks

0 of 3 complete
01Identify the missing DLL

Identify the missing DLL.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

I need help
02Install the appropriate runtime

Install the appropriate runtime.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

I need help
03Run SFC

Run SFC.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

I need help

Possible causes

  • Missing redistributable packages
  • Deleted DLL
  • Malware