Error “DllRegisterServer Entry Point Not Found”: What It Means and How to Fix It

When working with DLL (Dynamic Link Library) files in Windows, you might encounter the error message, “DllRegisterServer entry point not found.” This error typically appears when you try to register a DLL file using the regsvr32 command, but the file is missing the DllRegisterServer function required for registration.

Causes of the Error

Several reasons can cause this issue:

  • The DLL doesn’t require registration: Some DLL files don’t contain the DllRegisterServer function because they are designed to work without needing registration.
  • Corrupted DLL file: A damaged or malfunctioning DLL file can also trigger this error.
  • Incorrect DLL version: The error may occur if the DLL file is meant for a different operating system version or architecture (such as 32-bit vs. 64-bit).

How to Resolve the Issue

1. Check if the DLL Requires Registration

If you downloaded the DLL from a reliable source, confirm whether it actually requires registration. Some files, especially Windows system DLLs, function correctly without it.

2. Ensure the Command is Correct

Only use the regsvr32 path_to_file.dll command for DLLs that support registration. If the DLL doesn’t support DllRegisterServer, running this command will generate an error.

3. Run Command Prompt as Administrator

If the DLL does require registration, make sure you’re running Command Prompt as an administrator. This can help resolve access-related errors.

4. Verify System Architecture

Ensure that the DLL version matches your system architecture (32-bit DLLs for 32-bit systems and 64-bit DLLs for 64-bit systems). Mismatched architecture can lead to compatibility issues.