What is ipinip?

The genuine ipinip.sys file is a software component of Microsoft Windows Operating System by Microsoft.
A kernel level driver, this system file allows for IP to IP tunneling across an existing connection. This file allows the hardware to communicate with Windows. Founded in 1975, Microsoft's flagship product is the Windows operating system, which is installed on over 90% of workstations worldwide.

IPinIP stands for IP in IP Encapsulation Driver

Ipinip.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if ipinip.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for ipinip drivers in need of updating

Ipinip.sys file information

The process known as IP in IP Tunnel Driver or IP in IP Encapsulation Driver belongs to software IP in IP Tunnel Driver or Microsoft Windows Operating System by Microsoft (

Description: Ipinip.sys is an important part of Windows, but often causes problems. The ipinip.sys file is located in the C:\Windows\System32\drivers folder. The file size on Windows 10/8/7/XP is 20,864 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The file is a Windows core system file. The program has no visible window. The file is a Microsoft signed file. The software is not active. ipinip.sys appears to be a compressed file. Therefore the technical security rating is 0% dangerous, however you should also read the user reviews.

Recommended: Identify ipinip.sys related errors

Important: Some malware disguises itself as ipinip.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the ipinip.sys process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

Not installed by default
AVG antivirus says trojan horse Rootkit-Agent
  Chris M  
Can be either a IP in IP Encapsulation driver from Microsoft or malware.
  Elena   (further information)

Rating chart

Summary: Average user rating of ipinip.sys: based on 6 votes with 3 user comments. 3 users think ipinip.sys is essential for Windows or an installed application. One user thinks it's probably harmless. One user suspects danger. One user thinks ipinip.sys is dangerous and recommends removing it.

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Best practices for resolving ipinip issues

A clean and tidy computer is the key requirement for avoiding problems with ipinip. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the ipinip.sys process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

ipinip.sys [all]