How to remove an emFilter error
EmFilter.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 OS, hardware etc.
The free file information forum can help you determine if emFilter.sys belonging to the Windows system or an application you can trust.
Run a free scan to check for emFilter drivers in need of updating
EmFilter.sys file information
The process known as EM27xx (version EM28xx Filter Driver) or WDM NULL filter driver or USB 28xx WDM Lower filter belongs to software USB Device Lower Filter or Windows® Server (version 2003 DDK driver) by eMPIA Technology (www.empiatech.com.tw) or Windows® Server (www.microsoft.com/en-us/server-cloud/windows-server) (version 2003 DDK provider).
Description: The file emFilter.sys is located in the folder C:\Windows\System32\drivers.
Known file sizes on Windows 7/XP are 19,328 bytes (28% of all occurrences), 5,245 bytes, 99,712 bytes, 79,339 bytes or 79,563 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs.
The program is not visible. There is no detailed description of this service. EmFilter.sys is not a Windows core file.
emFilter.sys seems to be a compressed file.
Therefore the technical security rating is 19% dangerous, however also read the users reviews.
Recommended: Identify emFilter.sys related errors
Important: Some malware camouflages itself as emFilter.sys, particularly when located in the c:\windows or c:\windows\system32 folder. Therefore, you should check the emFilter.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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EmFilter scanner
Security Task Manager shows all running Windows tasks including embedded hidden functions (e.g. keyboard or browser monitoring, autostart entry). A unique security risk rating indicates the likelihood of the process being potential spyware, malware, keylogger or a Trojan. MalwareBytes detects and removes sleeping spyware, adware, trojans, keyloggers, malware and tracking threats from your hard disk. Ideal supplement to Security Task Manager. SpeedUpMyPC scans, cleans, repairs and optimizes your computer. |
Other processes
ptask.exe msplauncher.exe kybrded_7.exe emFilter.sys hpadvisor.exe vboxdrv.sys vilaunch.exe anonmgmtsvc.exe tbwisd.dll ppscheduler.exe adfsmenu.dll [all]
Claudio (further information)