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Manual Guidance
Security Analysis
Safety Score (informational)
91% Safe
Risk score: 3/3 · Checked by WinLibrary Engine
What is msmpeng.exe?
msmpeng.exe is a Windows Application Executable (EXE) referenced by system processes and installed applications. If it is missing or corrupted, Windows may show startup alerts or app crashes.
msmpeng.exe belongs to the Application Executable (EXE) family. Depending on the application that installed it, it may be used for UI rendering, networking, media, encryption, or device communication.
Common Error Messages
- Bad Image: msmpeng.exe is either not designed to run on Windows or it contains an error.
Example: Bad Image: msmpeng.exe is either not designed to run on Windows or it contains an error.
Possible Causes
- A Windows update or driver update did not complete correctly.
- Registry entries point to a missing or moved location.
- Disk errors, abrupt shutdowns, or failing storage corrupted the file.
- A third‑party installer replaced the file with an incompatible version.
How to Fix Missing Error?
- Run a full malware scan with a trusted antivirus solution.
- Run Windows Update and reboot.
- If needed, run: DISM /Online /Cleanup-Image /RestoreHealth
- 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 | msmpeng.exe |
|---|---|
| Publisher | Microsoft / Third Party |
| File Type | Application Executable (EXE) |
| Version | 4.32.4241.4230 |
| File Size | |
| Architecture | x86 |
| Last updated | 2025-10-27 |
| Default location | C:\Windows\System32 |
| Downloads | 333,320 |
| Rating | 5.0 / 5 (6,154 reviews) |
| SHA-256 Hash | c52452e300bd185b80068f6c3e6eb45fc0d9410c7f1d334f100ad56d1ddfc4cd |
| MD5 Hash | 387ae0406df6eef2e99ff2bcc5e71992 |
| Digital signature | Trusted · Windows Components |
FAQ
- Is msmpeng.exe 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 msmpeng.exe located?
Typical default locations include C:\Windows\System32. The actual path depends on the software that installed it. - Can I download msmpeng.exe 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 msmpeng.exe errors?
Most issues come from corruption, version mismatch, deletion/quarantine by security software, or an incomplete update.