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SYSTEM_SERVICE_EXCEPTION (3b) (blue screen error occurs after installing Endpoint Security 10.5.4 August Update)
Technical Articles ID:   KB90848
Last Modified:  9/11/2018


McAfee Endpoint Security (ENS) 10.5.4 August Update
McAfee ENS Common Client
McAfee ENS Firewall
McAfee ENS Threat Prevention
McAfee ENS Web Control


Due to the issue described in this article, McAfee has removed ENS 10.5.4 August Update from the Product Downloads site. For those customers that have already downloaded ENS 10.5.4 August Update, McAfee recommends to not install this update.


A blue screen error with BugCheck SYSTEM_SERVICE_EXCEPTION (3b) can occur after installing ENS 10.5.4 August Update.
A memory dump might show the characteristics in the following example:
An exception happened while executing a system service routine.
Arg1: 00000000c0000005, Exception code that caused the bugcheck
Arg2: fffff800018dc858, Address of the instruction which caused the bugcheck
Arg3: fffff880073153d0, Address of the context record for the exception that caused the bugcheck
Arg4: 0000000000000000, zero.
fffff880`07315da8 fffff800`018dc8c5 : fffffa80`06401310 fffff880`034e1010 
fffff880`07315ea0 fffff8a0`08c8d670 : nt!RealSuccessor
fffff880`07315db0 fffff880`03496c5b : fffffa80`08009b00 fffffa80`04b32630 
fffff880`07315eb0 ffffffff`fffffc00 : nt!RtlEnumerateGenericTableWithoutSplayingAvl+0x1d
fffff880`07315de0 fffff880`034a7526 : 00000000`00000003 00000000`00000000 
00000000`00000001 fffffa80`06e11038 : mfencbdc!GetOpenFileDataByFsContext+0xab
fffff880`07315e40 fffff880`034a8de8 : fffff880`034e1010 fffff880`07316520 
fffff880`07316858 00000003`00000006 : mfencbdc!ImageLoading+0x6c6
fffff880`073164d0 fffff880`0144b821 : 00000000`00000000 fffff880`07316858 
fffffa80`03fd1220 00000000`00000000 : mfencbdc!ImageLoading_+0x98
fffff880`07316500 fffff880`01409803 : fffff880`073166d0 fffffa80`03ffa000 
fffffa80`08888ab2 fffffa80`0492a0c8 : mfehidk!ProcessHookLoadImageNotifyRoutine+0xc1
fffff880`07316640 fffff880`01409fb7 : fffffa80`0492a0c8 00000000`00000960 
00000000`0000003e fffff880`07316858 : mfehidk!CONTROLDEVICE::InternalImageLoadNotify+0x1e3

System Change

Installing the ENS product versions listed in the Environment field of this article upgrades the Common Client version to


The driver involved in the issue is mfencbdc.sys.


This issue is resolved in Endpoint Security 10.5.4 September Update, which is available from the Product Downloads site at: http://mcafee.com/us/downloads/downloads.aspx.

NOTE: You need a valid Grant Number for access.

KB56057 provides additional information about the Product Downloads site, and alternate locations for some products.

Updates are cumulative; Technical Support recommends that you install the latest one.

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