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Manual Guidance
Security Analysis
Safety Score (informational)
91% Safe
Risk score: 3/3 · Checked by WinLibrary Engine
What is ndis.sys?
ndis.sys is a Windows System Driver (SYS) referenced by system processes and installed applications. If it is missing or corrupted, Windows may show startup alerts or app crashes.
ndis.sys belongs to the System Driver (SYS) family. Depending on the application that installed it, it may be used for UI rendering, networking, media, encryption, or device communication.
Common Error Messages
- The code execution cannot proceed because ndis.sys was not found.
- ndis.sys is missing from your computer.
- ndis.sys could not be loaded.
- Bad Image: ndis.sys is either not designed to run on Windows or it contains an error.
Example: The code execution cannot proceed because ndis.sys was not found.
Possible Causes
- Security software quarantined a file with the same name.
- A third‑party installer replaced the file with an incompatible version.
- Registry entries point to a missing or moved location.
- Disk errors, abrupt shutdowns, or failing storage corrupted the file.
How to Fix Missing Error?
- If needed, run: DISM /Online /Cleanup-Image /RestoreHealth
- Run Windows Update and reboot.
- 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 | ndis.sys |
|---|---|
| Publisher | Hardware Vendor |
| File Type | System Driver (SYS) |
| Version | 10.8.9773.82 |
| File Size | |
| Architecture | x64 |
| Last updated | 2026-01-18 |
| Default location | C:\Windows\System32\drivers |
| Downloads | 1,385,375 |
| Rating | 4.7 / 5 (4,642 reviews) |
| SHA-256 Hash | 88b3538f38ca1842b74dbf15f917de22e7bfcf0b323ab9d9ee7467465b75bfec |
| MD5 Hash | 7f4c91937df2750dcda24ef593ff1b3e |
| Digital signature | Trusted · Windows Components |
FAQ
- Is ndis.sys a virus?
Legitimate system components can share names with malware. Verify the file path (C:\Windows\System32\drivers), check signatures, and scan the system if you suspect an infection. - Where is ndis.sys located?
Typical default locations include C:\Windows\System32\drivers. The actual path depends on the software that installed it. - Can I download ndis.sys 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 ndis.sys errors?
Most issues come from corruption, version mismatch, deletion/quarantine by security software, or an incomplete update.