What is tap0901?

The genuine tap0901.sys file is a software component of OpenVPN by OpenVPN Technologies.
Tap0901.sys is a network tap driver that belongs to OpenVPN, a program that provides secure, private tunnels to while surfing the Internet. A network tap is a hardware device that can access data flowing through a computer network. This is not a critical Windows component and should be removed if known to cause problems. Removing this file may cause problems while running OpenVPN. OpenVPN is an open source project written in C that features an SSL (Secure Sockets Layer) VPN (Virtual Private Network) solution that lets users connect to the Internet through an encrypted tunnel that secures data and minimizes threats to privacy. The program can handle multiple connections and provides support for password protected accounts. OpenVPN Technologies is an American company that was set up following the success of James Yonan's OpenVPN Project in 2002. OpenVPN Technologies currently designs and distributes the OpenVPN virtual network software. The company is based in Pleasanton, California, USA.

TAP0901 stands for TAP-Win32 Virtual Private Network Driver 0901

Tap0901.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 tap0901.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for tap0901 drivers in need of updating

Tap0901.sys file information

The process known as TAP-Win32 Virtual Network Driver or TAP-Windows Virtual Network Driver belongs to software TAP-Win32 Adapter (version V9) or TAP-Windows Adapter (version V9) by The OpenVPN Project (

Description: Tap0901.sys is not essential for the Windows OS and causes relatively few problems. Tap0901.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 26,624 bytes (33% of all occurrences), 25,088 bytes and 4 more variants. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program has no visible window. The service has no detailed description. It is not a Windows system file. tap0901.sys appears to be a compressed file. Therefore the technical security rating is 34% dangerous.

Recommended: Identify tap0901.sys related errors

Important: Some malware disguises itself as tap0901.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the tap0901.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.


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Best practices for resolving tap0901 issues

A clean and tidy computer is the key requirement for avoiding problems with tap0901. 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 tap0901.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

tap0901.sys [all]