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Manual Guidance
Security Analysis
Safety Score (informational)
95% Safe
Risk score: 1/3 · Checked by WinLibrary Engine
What is defragproxy.dll?
defragproxy.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.
defragproxy.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
- Bad Image: defragproxy.dll is either not designed to run on Windows or it contains an error.
- The code execution cannot proceed because defragproxy.dll was not found.
Example: Bad Image: defragproxy.dll is either not designed to run on Windows or it contains an error.
Possible Causes
- A third‑party installer replaced the file with an incompatible version.
- Registry entries point to a missing or moved location.
- Security software quarantined a file with the same name.
- A Windows update or driver update did not complete correctly.
How to Fix Missing Error?
- Run Windows Update and reboot.
- If needed, run: DISM /Online /Cleanup-Image /RestoreHealth
- Run a full malware scan with a trusted antivirus solution.
- 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 | defragproxy.dll |
|---|---|
| Publisher | Microsoft |
| File Type | Dynamic Link Library (DLL) |
| Version | 3.22.6491.9532 |
| File Size | |
| Architecture | ARM64 |
| Last updated | 2025-06-24 |
| Default location | C:\Windows\System32 |
| Downloads | 2,420,705 |
| Rating | 4.8 / 5 (216 reviews) |
| SHA-256 Hash | c4911a19b1d9826a670f85984d7a87f0dc93c946049890cedceb5663e5c1bac7 |
| MD5 Hash | caa725d356da103964396332c1d81d43 |
| Digital signature | Trusted · WinLibrary Verified Publisher |
FAQ
- Is defragproxy.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 defragproxy.dll located?
Typical default locations include C:\Windows\System32. The actual path depends on the software that installed it. - Can I download defragproxy.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 defragproxy.dll errors?
Most issues come from corruption, version mismatch, deletion/quarantine by security software, or an incomplete update.