Corrigir que o Avast não atualiza as definições de vírus

Avast is one of the most commonly used antivirus software available on the internet. It is known for the best protection service for all devices connected to the internet. Since it is free-to-use software, many people rely on this software for antivirus protection. Yet, like all apps and games, Avast is not without errors and problems. Many users report Avast not updating virus definitions issue which causes a major security breach on your PC. If you are also facing the same problem on your device, the troubleshooting methods discussed in this guide will help you fix the issue.

How to Fix Avast Not Updating Virus Definitions

Here are a few common reasons that cause Avast antivirus not updating virus definitions issues on your computer. Analyze them deeper so you will get an idea of how to resolve the same.

• Any temporary glitches in your PC that are preventing Avast from updating the software and its components.
• You are running Avast with administrative rights. This prevents a few features from being accessed on your computer.
• Outdated Avast will cause the discussed problem.
• Few essential services like the aswbIDSAgent are disabled on your computer.
• The Avast installed on your PC is corrupt or misconfigured.
• Your PC is infected with malware or virus.
• Some background tasks are interfering with your program.
• Sistema operacional Windows desatualizado.
• Firewall is preventing Avast to open.
• Corrupt or incompatible installation files of Avast.
• Inappropriate date and time settings on your computer.

Now, move ahead to the next section to find the effective troubleshooting methods to fix Avast virus definitions won’t update issue.

Here are some effective troubleshooting methods that will help you fix Avast not updating virus definitions issue on your Windows 10 computer. Read them carefully before you implement them.

Método 1: Reinicie o PC

Before trying all the listed advanced troubleshooting methods, you are advised to reboot your computer. When you restart your computer, the technical glitches that cause any challenging layouts will be resolved thereby helping you to fix Avast not updating virus definitions issue. You can also desligar the PC using the Power options and turn it on again after some time.

1. Navegar para menu Iniciar.

2. Agora, selecione ícone de energia no canto inferior esquerdo da tela.

3. Várias opções como Dormir, Encerre e Reiniciar será exibido. Aqui, clique em Reiniciar.

Once you have restarted your computer, check if you can open Avast without any issues.

Method 2: Run Avast with Admin Privilege

You need administrative privileges to access a few features and services in Avast. If you do not have the required administrative rights, you might face Avast antivirus not updating virus definitions issue. However, few users have suggested that the problem can be resolved when running the program as an administrator.

1. Clique com o botão direito do mouse em Avast Ícone de antivírus na área de trabalho.

2. Agora, clique em Propriedades.

3. Na janela Propriedades, mude para o Compatibilidade aba.

4. Here, check the box Executar este programa como administrador.

5. Finalmente, clique em Aplicar> OK para salvar as mudanças.

Now, relaunch the program to see if Avast functions now without any problems.

Leia também: Fix Virus Definition Failed in Avast Antivirus

Método 3: alterar as configurações de data e hora

Incorrect date and time settings in your computer may contribute to Avast not updating virus definitions issue on Windows PC. To sync the date, region, and time settings in your Windows 10 computer follow the below-listed instructions.

1. aperte o Teclas Windows + I juntos para abrir Configurações do Windows.

2. Agora, selecione Horário e idioma criação.

3. Next, in Data hora guia, certifique-se de que os dois valores Definir a hora automaticamente e Defina o fuso horário automaticamente as opções estão ativadas.

4. Em seguida, clique em Sincronize agora as highlighted above. Check if the Virus Definitions Update Failed issue is resolved or not.

Method 4: Update Avast Antivirus

If there are any bugs within Avast, you can fix them by updating the app. As mentioned earlier, Avast gets regular updates to fix all the errors and bugs. When these bugs and errors come to the developer’s eye, they release updates to fix them completely. Follow the below-mentioned steps to update Avast app to fix Avast antivirus not updating virus definitions issue.

1. Aperte o Tecla do Windows e tipo Avast Free Antivirus. Clique em Abra do resultado da pesquisa.

2. Vamos para Menu icon from the top right corner of the Avast user interface.

3. Em seguida, selecione Configurações da lista.

4. Agora, mude para Atualizar guia e clique em Verifique atualizações button. Make sure you get the following messages.

• As definições de vírus estão atualizadas
• Avast Free Antivirus is up to date

5. Once you have updated it, restart Avast and check if the issue has been solved.

Leia também: Como consertar a atualização do Avast travada no Windows 10

Método 5: fechar processos em segundo plano

If you are still worried about Avast not updating virus definitions issue, it can be resolved by closing all the background tasks running on your PC. Several background tasks on your PC will interfere with Avast, thereby preventing the app from being opened. Hence, close all the background tasks on your PC by following our guide How to End Task in Windows 10, and proceed as instructed.

Once you have closed all the background processes, check if you were able to work with Avast on your computer without any issues.

Method 6: Enable aswbIDSAgent Service Settings

Several users have reported that the bug causing Avast virus definitions won’t update issue can be fixed by making some changes in the aswbIDSAgent Service. This method is very easy and you can implement the same by following the below-mentioned steps.

1. aperte o Tecla do Windows, Tipo Serviços, e clique em Executar como administrador.

2. Agora role para baixo e clique duas vezes em aswbIDSAgent serviço.

3. Now, in the new pop-up window, change tipo de inicialização to Automatic, as depicted.

Observação: Se o Status do Serviço is Parado, então clique no Início botão. Se o Status do Serviço is Corrida, clique em Dê um basta e comece novamente.

4. When you start the service, you may face a 1079 error (or something similar to that). In this case, switch to the Log On guia, clique no Esta conta botão de rádio e selecione o Procurar opção.

5. No Digite o nome do objeto a ser selecionado field, type the username of your account.

6. Em seguida, clique em Verificar Nomes option to authenticate the object name.

7. Agora, clique em OK to save the changes and if you are prompted, type in your administrator account.

8. Clique em Aplicar> OK to save the changes and check if you were able to open Avast without any issues.

Leia também: How to Remove Avast from Windows 10

Método 7: execute a verificação de vírus

There are few circumstances where a virus or malware in your computer is taking over the control of Avast. Hence, you must check whether the third-party harmful viruses are interfering with Avast, causing Avast not updating virus definitions issue.

Several Microsoft experts suggest that scanning a PC will help you maintain your computer threat free. If there are any viruses or malware intrusions on your PC, you cannot use external and internal hardware devices.

Portanto, é aconselhável verificar o seu computador conforme as instruções em nosso guia Como executo uma verificação de vírus no meu computador?

Além disso, se você deseja remover malware do seu computador, consulte nosso guia Como remover malware do seu PC no Windows 10.

Método 8: Atualizar o Windows

Also, if there are any bugs in your PC, they can only be fixed after a Windows update. Microsoft releases regular updates to fix all these bugs thereby troubleshooting Avast not updating virus definitions issues.

Portanto, certifique-se de ter atualizado seu sistema operacional Windows e se alguma atualização estiver pendente em ação, use nosso guia Como baixar e instalar a atualização mais recente do Windows 10

After updating your Windows Operating System, check whether you can access your Avast without any issues.

Método 9: modificar as configurações do Firewall do Windows Defender

Still, if you cannot fix Avast not updating virus definitions issue, this may be due to an over-reactive or over-protective firewall suite in your Windows 10 computer. This prevents the connection link between the app launcher and the server. So, to fix this problem, you can whitelist Avast in your Firewall settings or disable the problem temporarily.

Option I: Whitelist Avast Antivirus

To allow Avast in your Windows Defender Firewall, follow our guide Allow or Block Apps through the Windows Firewall and implement the steps as instructed.

Opção II: Desativar Firewall (não recomendado)

You can also disable Windows Defender Firewall, and to do so, check our guide on How to Disable Windows 10 Firewall and follow as instructed.

Opção III: Criar nova regra no firewall

1. Vamos para Menu Pesquisa e tipo Firewall do Windows Defender com segurança avançada. Depois, clique em Executar como administrador.

2. Agora, no painel esquerdo, clique em Regras de entrada como descrito.

3. Em seguida, no painel direito, clique em Nova regra… como mostrado.

4. Agora, certifique-se de selecionar o Agenda opção abaixo Que tipo de regra você gostaria de criar? menu e clique em Próximo> como mostrado.

5. Em seguida, clique no Squeaky toy… botão correspondente a Este caminho do programa: como mostrado.

6. Em seguida, navegue até C:Program Files (x86)Avast caminho e clique duas vezes em instalação file. Then, click on Abra botão.

Observação: This location may vary according to the directory from which you have installed Avast. Browser the location accordingly.

7. Em seguida, clique em Próxima> no Assistente de nova regra de entrada janela conforme mostrado.

8. Agora, selecione o botão de opção próximo a Permitir a conexão e clique em Próxima> como descrito.

9. Verifique se Domínio, Privado e Público caixas estão selecionadas e clique em Próxima> como mostrado.

10. Por fim, adicione um nome à sua nova regra e clique em Acabamento.

All done! Check if you can open Avast without any issues or not.

Method 10: Repair Avast Antivirus

If the above-listed solutions do not help you fix Avast antivirus not updating virus definitions issue, you can try repairing the app to fix all the harmful bugs within the app. This also fixes the corrupt installation files and even if this method fails to work, you can reinstall the app as instructed in the next method.

Option 1: Through Avast Antivirus Settings

1. Lançamento Avast Antivirus and navigate to Menu> Configurações como você fez anteriormente.

2. Em seguida, mude para guia de solução de problemas aba.

3. Aqui, clique em Reparar aplicativo in the right pane. Wait until the repairing process is complete. This might take a while.

Observação: Avoid closing any windows or tabs during the repair process.

4. Once the repair is complete, reboot your PC. Check if the Avast virus definitions won’t update issue is fixed or not.

Option 2: Through Add or Remove Programs

1. Tipo Adicionar ou remover programas no Pesquisa do Windows box. Launch it from the search result, as shown.

2. em Pesquisar esta lista barra, tipo Avast.

3. Em seguida, clique em Avast e, em seguida, modificar.

Observação: The below image is depicted for reference. Follow the same for Avast.

4. Clique em reparação in the Avast pop-up window and follow the on-screen instructions.

Wait for it to be repaired. Restart your Windows 10 PC and check if the issue is resolved or not.

Leia também: Fix SearchUI.exe Suspended Error on Windows 10

Method 11: Reset Avast Settings

You can reset Avast settings on your Windows 10 PC to fix Avast not updating virus definitions issue. This will resolve all the incorrect configuration settings without the app, helping you to resolve the problem at ease.

Observação: Resetting Avast will reset all the options and features of the app to their default values. You have to re-configure these options again once you open the app after the reset.

1. Lançamento Avast e clique em Menu option at the top right corner of the screen.

2. Agora, selecione Configurações na lista suspensa.

3. Em seguida, navegue até Geral tab and then select click on guia de solução de problemas opção.

4. Em seguida, selecione Restaurar ao padrão botão.

5. If you are prompted, click on Sim and proceed with the on-screen instructions. Check if you have fixed Avast antivirus not updating virus definitions issue or not.

Method 12: Reinstall Avast in Safe Mode

If repairing Avast, still does not solve Avast virus definitions won’t update issue, you may have to reinstall the app in safe mode to fix the same. When you clean install Avast, the faulty application along with cache files, and corrupt registries will be fixed.

Visite a Avast official uninstaller site, and then, click on avastclear.exe to get the Avast Uninstall Utility, as shown below.

Now you have to boot Windows in Safe Mode by following steps:

1. Tipo Windows configuração do sistema in the Windows search bar. Then, click on Configuração do sistema para lançá-lo.

2. Mude para o bota tab in the window that opens.

3. Em seguida, selecione Inicialização segura under Boot options and then, click on OK, como mostrado abaixo.

4. Restart the computer and the computer will boot into Safe Mode.

5. Once Windows 10 is open in Safe Mode, click on downloaded Avast Uninstall Utility você baixou anteriormente.

6. In the uninstall utility window, ensure that the correct folder containing the corrupt Avast program is selected.

7. Agora, clique em Desinstalar.

8. After Avast has been uninstalled, Reiniciar Windows in Modo normal.

9. Visit this official Avast link e depois clique em BAIXAR PROTEÇÃO GRATUITA to download the latest Avast Antivirus application, as shown below.

10. Once the file is downloaded, do to Meus Downloads, clique duas vezes no Setup file, and follow the on-screen instructions to install Avast.

Now when you launch the Avast program, you will not face Virus Definitions won’t update issue again.

Leia também: Como desinstalar o McAfee LiveSafe no Windows 10

Method 13: Contact Avast Support

If there are any major issues with Avast even after reinstalling the software, you can seek help from the Avast support site. This is a worth trying option to get rid of Avast not updating virus definitions issue. Follow the below-mentioned steps to contact the Avast support site.

1. Launch your favorite browser and visit the official Avast help center.

2. Now, scroll down the screen and click on Contate-nos botão.

3. Then, report your issue by following the on-screen instructions, and now, you could connect to an Avast professional to fix Avast antivirus not updating virus definitions problem.

Perguntas mais frequentes (FAQs)

Q1. Why does my Avast not updating virus definitions?

Resp. Se houver algum incompatibility issues in your PC, your Avast will not update new settings. If your Avast does not update this feature for you, make sure you check your firewall settings or repair the software if necessary.

Q2. Does Avast cause problems with Windows 10?

Resp. In some circumstances, Avast might interfere with the pre-installed apps of your PC and causes Windows 10 to crash, freeze, consume more resources, display Blue Screen Error (BSOD), and a lot more. This might occur due to some incompatible programs you run manually or a few automatic services running in the background when you boot your Windows.

Q3. Why is my Avast browser not opening?

Resp. If the Avast browser does not open on your Windows 10 PC, it may be because it is outdated or not updated properly. Poucos corrupt files within the app also cause the problem. Browser cache, cookies, and corrupt data also prevent Avast from being opened in the browser.

Q4. Is Windows Defender better than Avast?

Resp. Para ser mais preciso, Avast is better than Windows Defender Firewall. Few reports say that the detection rate for Windows Defender Firewall was 99.5 % while Avast detected 100% of malware and viruses. Avast also comes with advanced features that are not in Windows Defender Firewall.

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Esperamos que este guia tenha sido útil e que você possa fix Avast not updating virus definitions issue em seu sistema. Deixe-nos saber qual método funcionou melhor para você. Além disso, se você tiver alguma dúvida/sugestão sobre este artigo, sinta-se à vontade para deixá-la na seção de comentários.