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Alexandre LecoursAlexandre Lecours 

AVG blocks my webcam


I am creating a program with Qt on Windows using OpenCV for people with disabilities and using a webcam. When I launch the program, sometimes, the webcam won't start. I spent many hours on this and I finally pinpoint the problem to "AVG Protection". About 50% of the time I launched the program, I was receiving empty frames (the webcam opened succesfully but the frames were empty). With AVG Protection uninstalled, it works 100% of the time. Even if I tried disabling AVG antivirus the sometimes my frames were empty. I really had to uninstall AVG Protection.

I tried adding the program in the AVG exceptions but it did not change anything.

What could I do ? I want to deploy my application to other people and the basic solution "don't use AVG" does not seem good.

Thank you very much,


Akash ChandaAkash Chanda (Avast)
Hi Alexandre,

We understand your concern and apologize for the inconvenience caused. We request you to submit the Application for Whitelisting. Here is a link to our AVG Whitelisting Service : http://www.avg.com/us-en/whitelist

Thank you!
John DoryJohn Dory
I have a similar issue. My webcams  have stopped working when using OpenCV with both QT and Visual Studio 2015. Also the Microsoft Lifecam software version 3.6 that comes with the webcams no longer works. This is an issue with AVG and Avast. Uninstalling AVG and Avast fixes this issue. Please fix. Thanks
Bhuvaneswari VairavanBhuvaneswari Vairavan (Avast)
John Dory,
We are sorry to hear that,. Could you please let us know what AVG program and version you  have installed in your computer to assist further?
Thank you.
Mk KaMk Ka
I am experiencing a similar issue and would like to know when this will get fixed. What's strange is that Microsoft Camera app in Windows 10 can access the camera, but another non-Microsoft application that I am using can not.
Bhuvaneswari VairavanBhuvaneswari Vairavan (Avast)
Hello Mk ka,
We understand your concern. Could you please let us know what AVG program you have installed in your computer? also please provide us a screenshot of the AVG Interface installed in your computer to check and assist further.
Thank you.
Alan BinchAlan Binch
Mk, For your info, just in case that you are unaware, you can post the screenshot (http://avgclick.me/getscreenshot) here in your topic. Click on 'Answer' & then click on the 'Image' [mountain symbol] & follow the instructions. 
AVG Guru
John DoryJohn Dory

I installed the latest version:
User-added image
Beto MarqBeto Marq
A atualização do AVG em 4 de maio impede que o FFMPEG acesse minha câmera.
Como faço para liberar o acesso?
Pandi RajanPandi Rajan (Avast)
Hello Alexandre,

Thank you for providing the version details. Please follow the instructions to change the Firewall settings and check if that works: Open AVG Zen -> Internet Security -> Click on Menu in the top right corner -> Settings -> Components -> Firewall -> Customize -> Network Profiles -> Change the networks from Public to Private (If it is in Private, change it to Public).

Thank you.
Viktor KulichkinViktor Kulichkin
I have the same problem.  I'm a devrloper of  two programs for webcam control:
  1. Splitcam -  http://splitcamera.com/download.html
  2. KVYcam - http://kvy.com.ua/kvycam/
These programs are used thousands of users and have a digital sign - OMT-LIDER, TOV.
Since April I have gotten many complaints from my users with one issue: AVG blocks a webcams access for my programs. Why?,  before we don't have any problems with  AVG!
I produced that situation and tested  the AVG Internet Security 17.3.3011 (170504-2) in our lab. My users were right - the problem in AVG.
You can test my programs in your lab too.  These programs are free for usage and can be gotten by using those URLs, see above.
Hope on your  help,

Chris SChris S
I also echo this sendiment, I do not even have the firewall component and I have this issue.Shame on you AVG for blocking programs I use without my consent..Paid programs and 1 free program ..Splitcam whose developer is above my comment.How dare you you guys control what I can and cannot do without my authorization and not even give me a way to control those via setting on my own.You made me go crazy for days trying to figure this out , uninstalling and reinstalling things.. changing potential computer breaking registry..I had email developer of manycam which I use as well and they helped me pinpoint the issue.Now after googling it seems to be common issue  know for a while and AVG still has not rectify this issue.You suppose to protect my computer not make my life harder.. what makes you just as bad as the viruses avg is supposed to protect.I am not using free version I am using Ultimate Edition.To note your support is utter crap, directing us to use consumer tech line patching me to Haji all the way across the planet that doesn't know crap what i'm saying.If my compter gets messed bc AVG I'm giving my lawyer a call.


Now fix it!
Yamuna SathiyamurthyYamuna Sathiyamurthy (Avast)
Hello Chris,
We are sorry for the inconvenience caused.
The issue that you are experiencing has been already reported to our developers and they are working on it to fix the issue
They are working on it with high priority and it will be fixed in the future updates.
Thank you.
Yonathan HenaoYonathan Henao

To me it happens the same with other applications, when I have installed avg the desktop applications that use the camera do not give me image, and when I uninstall avg they work without problems
Sreedevi PadmakumarSreedevi Padmakumar (Avast)
Hello Yonathan,
Sorry to know that you have issues with applications after installing AVG.
Have you installed 2017 version of AVG in your computer?
If so,please disable individual components of AVG and check which component is blocking your applications.
Use the following instructions to disable AVG components : Open AVG Zen -> Click on Anti-Virus Free -> Click on "Menu" -> Settings -> Disable all components (Resident Shield, Software Analyzer and Email Protection (Disable Until restart)).
Thank you.
Yonathan HenaoYonathan Henao

Deactivates all security options and follows the problem, when uninstall is fixed, even when the service stops operating the camera
Akash ChandaAkash Chanda (Avast)
Hi everyone,

We apologize for the difficulties you all are currently facing, seems like you all have a common issue after the update. To assist you further, please install AVG and then please follow these steps to send us diagnostic information from your computer. This information will allow us to analyze the situation and provide you with a solution:

1. Download the AVG SysInfo tool : http://download.avg.com/filedir/util/AVG_SysInfo.exe
2. Run the downloaded tool.
3. Click Continue to agree with AVG’s license agreement and privacy policy. AVG SysInfo will now gather the necessary data.
4. Once the diagnostic output is ready, you may add comments, or click Attach file or Screenshot to provide us with additional information.
5. Fill in your email address
6. Fill in the case # which is 04593566 by copying and pasting it from this post
7. Click send output

As soon as we receive the data, we will analyze the files and provide you with further information.
Thank you!
Chris SChris S

AVG make no mistake about it you guys clearly crossed a line and infringed upon perhaps a legal matter blocking the use of hardware, and limiting software functionality in legit software that has valid signatures.You are essentially controlling software through a white/blacklist from your company where customers have no control over or any kind of setting in the program.You are stepping in legal shit and each day longer it takes for you to fix it the shit smells worse and worse


Akash ChandaAkash Chanda (Avast)
Hi Chris,

We apologize, please send us diagnostic information from your computer to analyze the files and provide you with further information.

Thank you!
Chris SChris S
Viktor KulichkinViktor Kulichkin
Dear Akash,

I've provided here the full info about blocking webcam by AVG  and would like to get your solution about that bug.
What do i must tell  my users - remove AVG at all and set another antivirus?
Viktor KulichkinViktor Kulichkin
Dear  Akash,

I've provided the full info about blocking webcam by AVG and would like to get your soulution about that bug.
What do i must tell  my users - remove AVG at all and set another antivirus?
Viktor KulichkinViktor Kulichkin
I've provided the full info about blocking webcam by AVG and would like to get your soulution about that bug.
What do i must tell  my users?
Pandi RajanPandi Rajan (Avast)
Hello Viktor,

We sincerely regret for the inconvenience caused. This is unwanted behavior and it has been already reported to the developers. We are working on it and this will be fixed in the future updates. We request you to run the AVG in Passive mode and this will be fixed temporarily. Please follow the instructions from the article to turn On the Passive mode: http://support.avg.com/SupportArticleView?urlname=How-to-use-Passive-Mode

Thank you.
Viktor KulichkinViktor Kulichkin
thanks, I'll inform my users about Passive mode
Yonathan HenaoYonathan Henao
Still without any solution ?, or some date of the solution of this inconvenient?, In fact this is affecting us much
Lisa MichelleLisa Michelle
My webcam not only stopped working since installing AVG but I get an AVG pop u telling me that i need to update my missing drivers and to do so i need to install yet another AVG program to do that! The driver from my webcam is not missing! when i uninstall AVG the camera works just fine. This is terrible AVG. I thought you were one of the few security providers that were honest!
AvinashAvinash (Avast) 
Hello Lisa,
I apologize for the inconvenience caused. I see that you have an active AVG Ultimate subscription which includes both Internet Security and TuneUp apps. May I know upon uninstalling which component did the webcam issue got resolved?
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