WindowsFormsIntegration.dll - Missing DLL Error Fix for Windows
★★★★★ Verified File (12.07.2026)
The file was obtained from the pack Dedproxy
Description
Creation date: 15.05.2066 20:11:48 File version: 9.0.1125.52002 Antivirus scan: ✅ OK Category: System File size: 206.3 kb. Architecture: 64-bit (x64) ✅ This file is compatible with 64-bit Windows and ❌ will not work on a 32-bit operating system.
How to determine your system architecture:
Press keys Win+R , enter symbols wmic os get osarchitecture , press Enter.
Digital file signature WindowsFormsIntegration.dll
Publisher: Microsoft Corporation
Issuer: Microsoft Code Signing PCA 2011
Encryption algorithm: SHA256
Time stamp: Oct 20 17:49:03 2025 GMT
What is a DLL File? A DLL (Dynamic Link Library) file in Windows is a collection of functions that can be used by any application. These files are shared between applications to optimize system performance and reduce the size of executable files.
WindowsFormsIntegration.dll is a specific DLL file that integrates Windows Forms controls into WPF (Windows Presentation Foundation) applications. This integration allows developers to create more sophisticated user interfaces by combining the simplicity of Windows Forms with the advanced features of WPF.
Errors related to WindowsFormsIntegration.dll
Error Messages: If you encounter issues such as "WindowsFormsIntegration.dll not found," "missing WindowsFormsIntegration.dll," or "error loading WindowsFormsIntegration.dll," it can affect the performance of applications that rely on this file. These errors might manifest in various ways, including application crashes or unexpected behavior.
FAQ
How to fix WindowsFormsIntegration.dll missing error?
Download the correct file and copy it to the required program folder.
Is WindowsFormsIntegration.dll safe?
The original WindowsFormsIntegration.dll file was scanned by the antivirus, result: "OK".
Can I delete WindowsFormsIntegration.dll ?
You can move the file to a temporary folder and try to replace.
To fix the following errors:
WindowsFormsIntegration.dll was not found
The code execution cannot proceed because WindowsFormsIntegration.dll was not found
Failed to load WindowsFormsIntegration.dll
The procedure entry point ... could not be located in WindowsFormsIntegration.dll
2a. 👉 Try to copy WindowsFormsIntegration.dllC:\Program Files\Your program\
2b. Also try to copy to bin, lib folders.
2c. Try to copy WindowsFormsIntegration.dllC:\Program Files (x86)\Your program\
👉 It is recommended to back up the files before replacement.
How do I switch to the current Windows directory?
- Press and hold the key "win" on the keyboard and press the key "r" , then write %windir% and press the key Enter.
How to switch to the directory Program Files (x86) ?
- Press Win+R then enter %ProgramFiles(x86)% and after press Enter.
Advanced users only:
3. Copy into the folder C:\Windows\System32\
3b. Copy into the folder C:\Windows\SysWOW64\
How to fix errors
Reinstall the Program: If a specific application relies on this DLL file, reinstalling it can resolve any missing or corrupted files.
Update Windows: Keeping your operating system up-to-date ensures that all necessary DLLs are installed and configured correctly. You can check for updates through Windows Update settings.
Manually Replace the File: If you suspect the file is missing or corrupted, download a fresh copy from a trusted source (such as Microsoft's official website) and replace it in the system directory. Be cautious when manually replacing files to avoid conflicts with other software.