Does this file C:WindowsSysWOW64mfc45.dll come from Microsoft?

Yes, the file C:WindowsSysWOW64mfc45.dll is a Microsoft file. It is a part of the Microsoft Foundation Class (MFC) Library, which is a collection of pre-written code that developers can use to create Windows applications. The mfc45.dll file specifically is a dynamic link library (DLL) that contains functions related to MFC version 4.5.

If you are experiencing issues with this file, such as error messages or crashes, there are a few steps you can take to try and fix the problem:

1. Run a virus scan: Sometimes, malware can infect system files like mfc45.dll and cause issues. Running a full virus scan with a reputable antivirus program can help identify and remove any infections.

2. Update Windows: Microsoft regularly releases updates for Windows that include bug fixes and security patches. Make sure your system is up to date by checking for and installing any available updates.

3. Reinstall the MFC Library: If the mfc45.dll file is corrupted or missing, you may need to reinstall the MFC Library to fix the issue. This can typically be done through the Control Panel > Programs and Features > Microsoft Visual C++ Redistributable.

4. Use System File Checker: Windows has a built-in tool called System File Checker that can scan for and repair corrupted system files. To use it, open a Command Prompt as an administrator and type “sfc /scannow” (without quotes) and press Enter.

By following these steps, you should be able to resolve any issues related to the mfc45.dll file and get your system running smoothly again.


In conclusion, the file C:WindowsSysWOW64mfc45.dll is a Microsoft file and is an important component of the MFC Library. If you are experiencing any issues with this file, try the steps mentioned above to fix the problem. If you continue to have issues, it may be best to seek assistance from a professional or Microsoft support.

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