[solved] Device Manager: Bitdefender Avc Hv Yello Mark

Hiya,

Run a repair -

Control Panel>Programs and Features>Bitdefender 2015>double click and choose "Repair". Let it complete, reboot your computer. Hopefully that will solve the problem.

Ro.

Unfortunately it didn't work for me...

I have this too now. It appears to me to be a new resulting incompatibility with Malwarebytes Anti-Malware. I uninstalled both and then reinstalled Bitdefender and the error went away. Once i reinstalled Malwarebytes it came back. This appears to be a recent phenomenon because I have run both side by side for almost a year with no issues.

My device manager is showing the same thing and I am running MBAM Pro as well, with exceptions added to both programs. Hopefully the gurus at BD will find a fix.

Have a great day.

Regards,

-Phil

Same problem here. I think it started after the windows updates from last Tuesday but I'm not sure.

Reinstalling and/or repairing the product doesn't work. You can manually install the driver and the problem goes away but as soon you reboot the pc it has the yellow mark again. I don't have Malwarebytes installed.

Windows 8.1

Steven

I have this issue as well, as I reported above. Before updating my laptop today (I had already updated my main tower with the latest BD major release this week), I checked in my Device Manager,

and the Bitdefender device was working fine.

After I updated and rebooted Bitdefender, the device has the yellow triangle and a Code 31 error in my laptop just like my main tower.

I don't think that there is any doubt that the latest BD major release sideswiped something. Both computers run Malwarebytes Premium and Malwarebytes Anti-Exploit with exceptions added to BD, MBAM, and MAE.

The programs were running fine together until this latest update.

I hope that BD can find a fix. I don't like seeing my anti-virus device showing as non-functional. It does not give one "warm fuzzies." Lots of bad stuff out there in cyberspace.

Have a great day.

Regards,

-Phil

I have the same problem too. BD TS 2015 on win 8.1 Pro 64bit.

Same problem here.

System:

Windows 7 Home Premium x64;

Sony Vaio; i7; 8Gb;

Product:

Bitdefender Total Security 2015;

Other security software:

installed - MBAM Premium;

uninstalled (with uninstall tool) - avast! Internet Security 2015;

Other essential software:

OpenVPN; Oracle VM VirtualBox (tried to uninstall and re-install);

Tried to resolve with repair and manual driver update - no luck.

Support, please either help to resolve or confirm your software functionality not much affected by the issue.

Thanx,

Awaiting yours kind attention,

- V

Please open CMD with elevated privileges, enter the command below and post back your results. Thank you!

sc query avchv

Please open CMD with elevated privileges, enter the command below and post back your results. Thank you!

sc query avchv

...and mine:

AMD CPU, 6 cores.

Thank you for posting your results.

First of all we want to stress that this is not the Active Virus Control driver and does not affect the AVC functionality from Bitdefender.

AVCHV.SYS is the function driver that commands the hypervisor (start, stop, deliver options). On a performant CPU / if the CPU has more than 4 logical cores, avchv behaves differently.

Could you confirm how many cores does the CPU of the affected PC have?

Thank you in advance, I will get back with more information from our developers as soon as I receive them.

CPU

Cores 4

Threads 8

Name Intel Core i7 740QM

Code Name Clarksfield

Package Socket 989 rPGA

Technology 45nm

Specification Intel Core i7 CPU Q 740 @ 1.73GHz

CMD

Microsoft Windows [Version 6.1.7601]

Copyright © 2009 Microsoft Corporation. All rights reserved.

C:\Windows\system32>sc query avchv

SERVICE_NAME: avchv

TYPE : 1 KERNEL_DRIVER

STATE : 1 STOPPED

WIN32_EXIT_CODE : 1077 (0x435)

SERVICE_EXIT_CODE : 0 (0x0)

CHECKPOINT : 0x0

WAIT_HINT : 0x0

I am having the same problem as well now. I have an i7 4770K with hyperthreading enabled. So what exactly IS missing/not working with this error?

Intel Core i7 4th Gen @ 2.2GHz

Core: 4

Threads: 8

We're having the same issue but with the corporate version. I wish someone would explain better if this driver is leftover and can be removed or what. We were planning on deploying this to over 500 computers but can't until this issue is better addressed.

Thank you for posting your results.

First of all we want to stress that this is not the Active Virus Control driver and does not affect the AVC functionality from Bitdefender.

AVCHV.SYS is the function driver that commands the hypervisor (start, stop, deliver options). On a performant CPU / if the CPU has more than 4 logical cores, avchv behaves differently.

What does this mean? What is actually affected? Any word on a fix?

Company Digital Security reported the discovery of serious security problems in the popular products for anti-virus protection with hardware virtualization technology. Link to presentation, developers may bitdefender, it will be interesting.

https://www.dropbox.com/sh/bkfajegn2mn35ng/...jI9n9Dl2Wa?dl=0

We are talking about packages McAfee DeepDefender, Avast DeepScreen and Kaspersky Internet Security 15. Digital Security company stresses that these products were selected for the study on the grounds that at the time of the study, only they use hardware virtualization. This technology provides the ability to work at a lower compared to the operating system kernel level, thus enhancing the degree of protection against various types of threats.

Can someone please explain this fix i was told to do. not really sure how to do it .

Bitdefender Support Center via mandrillapp.com

11:50 AM (40 minutes ago)

to me

Hi Michael,

Thank you for your patience.

Our developers compiled a patch which should solve this situation.

1. Please save the archive uploaded here to your PC where AVCHV driver seems to be disabled, then start Windows in Safe Mode:

http://speedy.sh/mgMGn/avchv.rar

Here is a Microsoft article that will guide you to start the computer in Safe Mode:

http://windows.microsoft.com/en-US/windows...er-in-safe-mode

2. Decompress the archive and run this file: avchv_reinstall.cmd

3. Reboot the machine for the changes to apply.

We are looking forward to your results.

I'm having the same problem. I'm running an 8 core AMD and Windows 8.1 Pro. I ran the patch in safe mode but it only appears to have uninstalled the device, it's not in device manager anymore.

After applying the patch.

Done!

After applying the patch, the AVC HV entry, simply disappeared from the Device Manager.

Windows 7 x64

Processor Intel i7 860 with 4 Cores and 8 Threads.

I have an Acronis system image that was created on Oct 20th 2014, before this error started. I restored from that image and the device works fine, but as soon as I update bitdefender the problem reappears. It's definitely a problem caused by a bitdefender update that came out sometime between Oct 20th and now. I tried the patch again and get the same error. Here are some screenshots.

@ Georgia

Explain please, what function in the hypervisor, how it works?

Thanks.

Please let me know about the fix for this issue.

Info of my rig:

I7-4790K, Cores 4, Logic: 8

Memory: 16Gb

Windows 8.1 64Bits

For what is worth.

I am using BDIS 2015 on an AMD Athlon 2x with W7-SP1

Bitdefender AVC HC is working

Driver file number is 3.10.7096.4224 dated 11/2/2012

BDIS 2015 version number is 18.19.0.1396

My Intel i5s are running W8.1 with BD W8 Security and there is not a Bitdefender AVC HC driver listed under Systems devices.

Yeah it seems to only be a problem if you have a CPU with more than four hardware or logical cores. That's interesting about the ones with W8 security not having it at all though.

Yeah it seems to only be a problem if you have a CPU with more than four hardware or logical cores. That's interesting about the ones with W8 security not having it at all though.

That's right, I left for a system of two processor cores of the six, and the service appeared in the device manager, only the driver is missing digital signature.