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Manual Guidance
Security Analysis
Safety Score (informational)
93% Safe
Risk score: 2/3 · Checked by WinLibrary Engine
What is mfc120u.dll?
mfc120u.dll is a Windows Dynamic Link Library (DLL) referenced by system processes and installed applications. If it is missing or corrupted, Windows may show startup alerts or app crashes.
mfc120u.dll belongs to the Dynamic Link Library (DLL) family. Depending on the application that installed it, it may be used for UI rendering, networking, media, encryption, or device communication.
Common Error Messages
- mfc120u.dll could not be loaded.
- Bad Image: mfc120u.dll is either not designed to run on Windows or it contains an error.
- The program can’t start because mfc120u.dll is missing.
- mfc120u.dll is missing from your computer.
Example: mfc120u.dll could not be loaded.
Possible Causes
- A third‑party installer replaced the file with an incompatible version.
- Disk errors, abrupt shutdowns, or failing storage corrupted the file.
- A Windows update or driver update did not complete correctly.
- Registry entries point to a missing or moved location.
How to Fix Missing Error?
- If needed, run: DISM /Online /Cleanup-Image /RestoreHealth
- Run Windows Update and reboot.
- Reinstall the application or driver that is related to the error.
- Open an elevated Command Prompt and run: sfc /scannow
Note: The metadata shown here is informational and may not match your exact system. For critical system components, prefer official sources and Windows repair tools.
Technical Details
| Original Filename | mfc120u.dll |
|---|---|
| Publisher | Microsoft |
| File Type | Dynamic Link Library (DLL) |
| Version | 8.45.4020.3075 |
| File Size | |
| Architecture | ARM64 |
| Last updated | 2026-04-21 |
| Default location | C:\Windows\System32 |
| Downloads | 659,888 |
| Rating | 4.1 / 5 (8,237 reviews) |
| SHA-256 Hash | 6858645349402e5cb17ae2e2c4e92e838de0e8c242dd7ddf63a8521ee33b5001 |
| MD5 Hash | 49528aa21e7278cbdd866130dd6f1e10 |
| Digital signature | Valid · WinLibrary Verified Publisher |
FAQ
- Is mfc120u.dll a virus?
Legitimate system components can share names with malware. Verify the file path (C:\Windows\System32), check signatures, and scan the system if you suspect an infection. - Where is mfc120u.dll located?
Typical default locations include C:\Windows\System32. The actual path depends on the software that installed it. - Can I download mfc120u.dll from the internet?
Use only trusted sources. If you are unsure, reinstall the related app/driver or use Windows repair tools instead of copying random files. - What usually causes mfc120u.dll errors?
Most issues come from corruption, version mismatch, deletion/quarantine by security software, or an incomplete update.