How to remove Teefer error

The free file information forum can help you find out if Teefer.sys is a virus, trojan, spyware, adware which you can remove, or a file belonging to a Windows system or an application you can trust.

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Teefer.sys file information

The process Teefer Driver belongs to the software Sygate Teefer Driver or Sygate Personal Firewall or VCOM SystemSuite Professional or Sygate Personal Firewall Pro or Sygate Security Agent by Sygate Technologies, Inc (www.sygate.com).

Description: Teefer.sys is located in the folder C:\Windows\System32\drivers. Known file sizes on Windows XP are 60,496 bytes (40% of all occurrence), 55,888 bytes, 59,984 bytes, 61,008 bytes, 85,456 bytes, 86,896 bytes, 59,472 bytes, 59,996 bytes.
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. Teefer.sys is not a Windows system file. The program can be removed using the control panel Add\Remove programs applet. Teefer.sys seems to be a compressed file. Therefore the technical security rating is 29% dangerous, however also read the users reviews.

Recommended: Identify Teefer.sys related errors

Important: Some malware camouflage themselves as Teefer.sys, particularly if they are located in c:\windows or c:\windows\system32 folder. Thus check the Teefer.sys process on your pc whether it is pest. We recommend Security Task Manager for verifying your computer's security. It is one of the Top Download Picks of 2005 of The Washington Post and PC World.

Score

User Comments

It looks like Symantec is using Teefer in their PreRelease Evaluation of their Endpoint Protection software. I was not aware that it had installed, and I don't seem to be having issues with it, I was just surprised when I looked at my network settings and saw an unknown service (listed as Teefer2 Driver) installed.
Shawn Nestingen

Got 2 blue screens so far, by trying to write to read-only mem. I know that is from Sygate Personal Firewall but I´ve been using it for a while and only recently got this problem
Nibbus

Installed because of sygate personal firewall
rc

In my case I was getting the bsod until I updated a D-link driver, and don't appear to have a problem with it now. It seemed to conflict with the old driver, which also caused bsod with a file called a5agu.sys.
Jack R.

Definitely associated with Sygate Personal Firewall
Tim G

associated with System Suite/Windows 98

The mother of sygate & Co do in the CIORA
Mammt

May be needed for SPF to run, but the bloody thing causes BSOD in Windows XP when Internet Connection Sharing is enabled...
TeeFee

Also part of Bullguard AntiVirus
Bart M (further information)

necessary sygate file
amdstroyer

kills win2000, deadended to memory dump, after upgrading system suite6 win98 unable to load it, but keeps working
franko

i just removed the teefer.sys file from : C:\Program Files\Sygate and all is fine again now
Ashers

Appears to be associated with with Sygate Personal Firewall. I uninstalled SPF with Add/Remove software & computer is working good now.
Mike R

It may be spyware or adware that`s named (camouflaged) like this, even if it`s originally from sygate. I never installed Sygate software in my computer, and I had never heard of it, yet I still had it in my system. (???)
Tony (further information)

Teefer.sys in XP Pro allowed downloading of SP2 but blocked the installatiion and in 98se blocked the re
Ray

Blue Screen in Windows 2003 - argh!
Kirby L. Wallace

Installed and used by Sygate personal firewall, said to sometimes cause unknown errors.
The Angel Loving All Souls (further information)

It causes BSOD's
Aggemam

sygate driver

My problem is with TEEFER.vxd. It stops Win 98SE loading and says I must run Win setup to clear it but every time the setup reboots I get the same error msg.Can start in safe mode but have not attempted any fixes yet. I do have Sygate firewall installed tho....
BB1942

Teefer.sys is installed by sygate. it creates problem after installing the Sql Server in 2003 server envirment
Deepak

Got a Bluescreen (Stop: 0x0000007e) from teefer.sys ...
Frank

removed sygate firewall and it won't allow me to reboot or re-setup. Not happy.
Donna S

I know that this file is installed by Sygate Personal Firewall on XP, but I´m getting some Blue Screens with this file as an error cause.
[Raptor]

Teefer Driver of Sygate Firewall for WinXP, 2000
Alex

Sygate Personal Firewall
G33K

On my system Teefer.sys was installed with my Ontrack System Suite 5.0 software, aka VCom.
Sooz

It is indeed installed as part of Sygate Personal Firewall. There are two copies on my system: teefer.sys in C:\Program Files\Sygate\SPF; and Teefer.sys (notice the capital) in C:\Windows\System32. One of them gave me a BSoD for trying to write to protected memory.
Tom H.

Gave me a bluescreen
Fredrik

installed by Sygate Personal Firewall on XP systems
Alan R (further information)

Summary: 17 users think Teefer.sys is essential for Windows or an installed application. 6 users think it's probably harmless. 3 users think it's neither essential nor dangerous. 3 users suspect danger. 2 users think Teefer.sys is dangerous and recommend to remove it.. 5 users doesn't grade Teefer.sys ("not sure about it").

Teefer scanner

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