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- Who is the Manufacturer of your PC ? (HP / Dell / Lenovo / Gateway..)
- How Old is your Computer ?
- Are you using any other security software apart from McAfee on your PC ?
- Are you facing this problem ever since you installed this McAfee or with the recent changes in your PC ?
- Recently, have you made any changes in the PC ?
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McSvHost.exe crashes on both my HP paviion a350y XpProSP3-32 bit and Toshiba Satellite C655D-S5136 W7Home-64bit. In both computers, the same Unhandled Win32 Exception occurs. This only seems to happen when connected to the Internet and it typically happens after about 45 minutes of connection. This problem has existed for at least several weeks. I have captured some details of the problem on the XP computer.
Shutdown McSvHost due to unhandled Win32 Exception
Unhandled exception at 0x77f67095 in McSvHost.exe: 0xC0000005: Access violation reading location 0x00000004.
After this, msconfig shows SiteAdvisor Service, Personal Firewall, McAfee Services, Virus Scan Announcer, Network Agent, Scanner (not normally running anyway), Proxy Service stopped. McShield, Debug Manager, Core Service, Validation Trust Protection Service still running. Services says that McAfee Services is "started" and the McAfee application (mcagent.exe) reports everything ok, including firewall. sc says that the service name for McAfee Services is mcmscsvc. sc query mcmscsvc shows it running. Task Manager shows McSvHost.exe but taking little or no CPU time. When McAfee Services is restarted in Services, msconfig shows it running again but the other McAfee services all have to be individually restarted.
The McSvHost files are:
01/27/2011 06:28 PM 159,296 McSHIns.dll
01/27/2011 06:27 PM 2,682 McSvcHost.inf
01/27/2011 06:28 PM 214,904 McSvHost.exe
01/27/2011 06:28 PM 209,248 McSvHVer.dll
For both McSvHost.exe and McSvHVer.dll:
Product Version 2,0,0,0 File Version 188.8.131.52 Signed Thursday, January 27, 2011 3:28:13 PM
When the exception occured, I started Visual Studio to examine it. I don't have symbols so I can't tell you where this is in source but it occurs soon after a bunch of NOPs, suggesting that it is near the beginning of a function. In fact, it is so near the beginning that it might not be in your visible code but in function preamble code inserted by the compiler.
77F67087 mov edi,edi
77F67089 push ebp
77F6708A mov ebp,esp
77F6708C mov edx,dword ptr [ebp+8]
77F6708F test edx,edx
77F67091 mov eax,edx
77F67093 je 77F670BB
77F67095 mov cx,word ptr [edx] <<<<<<< edx = 4 Ouch!
77F67098 test cx,cx
77F6709B je 77F670BB
77F6709D push esi
77F6709E cmp cx,5Ch
77F670A2 je 77F670BF
77F670A4 cmp cx,3Ah
77F670A8 je 77F670BF
77F670AA cmp cx,2Fh
77F670AE je 77F670BF
77F670B0 inc edx
77F670B1 inc edx
77F670B2 mov cx,word ptr [edx]
77F670B5 test cx,cx
77F670B8 jne 77F6709E
77F670BA pop esi
77F670BB pop ebp
77F670BC ret 4
77F670BF lea ecx,[edx+2]
77F670C2 mov si,word ptr [ecx]
77F670C5 test si,si
77F670C8 je 77F670B0
77F670CA cmp si,5Ch
77F670CE je 77F670B0
I am receiving the exact same error message at least once per day, and I can assure the McAfee moderators and techs that the issue is NOT related to hardware: I have McAfee licenses for five different computers (all running Windows XP with the latest service packs)—one HP laptop with an AMD dual processor, one Macbook (yes, running Windows XP) with an Intel duo-core processor, one iMac (again, running Windows XP) with an Intel duo-core processor, one Gateway laptop with an AMD processor, and one Compaq laptop with an Intel duo-core processor—and the message pops up on ALL of them. I use Firefox 8.x on all of the computers (never IE), and other than Firefox, no two computers have the exact same software installed (but no cloud software installed, no zuma back-up, no netguard, or any of that stuff). In addition, I've seen postings about this error all over your McAfee forums and elsewhere on the internet, and it seems the error is popping up on a wide variety of makes and models of computers, and the only common denominators seem to be Windows XP and McAfee.
Netguard is part of the McAfee software. There's another thread describing how to disable it; I'm at work and don't have time to search for it right now. But disabling Netguard worked for me; give it a try.
Okay, thanks, Lisa. The way people were talking here, I just assumed that netguard was a separate application. I'll see if I can figure out how to disable it, though I think it's kind of strange to have to disable part of an application in order to "fix" one of its bugs. And I'm hoping that in doing so I don't open myself up to something that McAfee is supposed to be protecting me from.