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Teefer2.Sys crashing windows 7

Created: 10 May 2012 | 3 comments

I have 2 network users both running Windows 7 on Dell E5520 laptops. Both have recently began to crash (BSOD) returning errors regarding Teefer2.sys. I have searched all over and so far no definite solution appears to exist. My SEP version is 12.0.1001.95, which one forum post stated would not produce the errors associated with Teefer2. That information is not accurate. I have not had any Windows 7 desktop users experience BSOD or Teefer2 errors.

Here is the data from BlueScreenView

Dump File         : 050412-86268-01.dmp
Crash Time        : 5/4/2012 8:28:30 AM
Bug Check Code    : 0x1000007e
Parameter 1       : ffffffff`c0000005
Parameter 2       : fffff880`063c3ca1
Parameter 3       : fffff880`009e48e8
Parameter 4       : fffff880`009e4140
Caused By Driver  : teefer2.sys
Caused By Address : teefer2.sys+f9c8
File Description  : Symantec CMC Firewall Teefer2
Product Name      : Symantec CMC Firewall
Company           : Symantec Corporation
File Version      : 11.0.4819.5
Processor         : x64
Crash Address     : teefer2.sys+4ca1
Stack Address 1   : 
Stack Address 2   : 
Stack Address 3   : 
Computer Name     : \\*******
Full Path         : \\*******\c$\Windows\Minidump\050412-86268-01.dmp
Processors Count  : 4
Major Version     : 15
Minor Version     : 7601
Dump File Size    : 262,144
Both laptops began experiencing BSOD around the same timeframe.

Comments 3 CommentsJump to latest comment

Thomas K's picture


You are running the older version of SEP 12.0 SBE. I recommend you upgrade to the latest SEP 12.1 SBE version.

Release Notes:

T1_Tech2004's picture

Thanks for the reply Thomas. I was browsing around and found the following information.

It mentioned Symantec Endpoint Protection Manager for disaster backup /recovery. However, I do not have anything remotely close to the path stated for the backup (Program Files\Symantec\Symantec Endpoint Protection Manager\data\backup).

This link provides a quick overview of what to do before upgrading, however; it mentioned upgrading as noted below.

Migration paths
Symantec Endpoint Protection 12.1.1000.157 (RU1) can migrate seamlessly over the following:

Symantec Endpoint Protection 12.1.671.4971 (RTM)

1. Do I need to completely uninstall my current version (12.0.1001.95) before the upgrade?

I am unable to locate a valid download link for the 12.1 version. I logged into Symantec file connect with a valid serial number, but there is no 12.1 version available.

Thanks for the assistance.

Thomas K's picture

You can upgrade without issues from 12.0 SBE to SEP 12.1 SBE.

You may not have entitlement to the new version, so I suggest you contact Customer Care to see why the new version is not avaialble for download.

Customer Care -

Let me know if you need more information.