Oprava Avast, který neaktualizuje definice virů

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• Outdated Avast will cause the discussed problem.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.
• Zastaralý operační systém Windows.
• 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.

Metoda 1: Restartujte počítač

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 uzavřít the PC using the Power options and turn it on again after some time.

1. Navigovat do V nabídce Start.

2. Nyní vyberte ikona napájení v levém dolním rohu obrazovky.

3. Several options like Spát, Uzavřít, a Restart will be displayed. Here, click on Restart.

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. Klikněte pravým tlačítkem na Avast Antivirová ikona na Ploše.

2. Nyní klikněte na Nemovitosti.

3. V okně Vlastnosti přepněte na Kompatibilita Karta.

4. Here, check the box Spustit tento program jako správce roku.

5. Nakonec klikněte na Použít> OK pro uložení změn.

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

Také čtení: Fix Virus Definition Failed in Avast Antivirus

Metoda 3: Změňte nastavení data a času

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. zmáčkni Klávesy Windows + I. společně otevřít Nastavení systému Windows.

2. Nyní vyberte Čas a jazyk nastavení.

3. Next, in Čas schůzky zkontrolujte dvě hodnoty Nastavte čas automaticky a Nastavte časové pásmo automaticky možnosti jsou zapnuté.

4. Poté klikněte na Synchronizujte nyní 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. Zasáhnout Klávesa Windows a typ Avast Free Antivirus. Klikněte na Otevřená z výsledku vyhledávání.

2. Jít do Menu icon from the top right corner of the Avast user interface.

3. Poté vyberte Nastavení ze seznamu.

4. Nyní přepněte na Aktualizace a klikněte na Zkontrolovat aktualizace button. Make sure you get the following messages.

• Definice virů jsou aktuální
• Avast Free Antivirus is up to date

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

Také čtení: How to Fix Avast Update Stuck on Windows 10

Metoda 5: Zavřete procesy na pozadí

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. zmáčkni Klávesa Windows, typ Služby, a klikněte na Spustit jako správce.

2. Nyní přejděte dolů a poklepejte na aswbIDSAgent služby.

3. Now, in the new pop-up window, change Typ spouštění to Automatic, as depicted.

Poznámka: V případě, že Service Status is Zastaveno, potom klikněte na tlačítko Home knoflík. Pokud Service Status is Běh, klikněte na Stop a začněte znovu.

4. When you start the service, you may face a 1079 error (or something similar to that). In this case, switch to the Přihlášení klikněte na kartu Tento účet přepínač a vyberte Procházet volba.

5. V Zadejte název objektu k výběru field, type the username of your account.

6. Poté klikněte na Zkontrolujte jména option to authenticate the object name.

7. Nyní klikněte na OK to save the changes and if you are prompted, type in your administrator account.

8. Klikněte na Použít> OK to save the changes and check if you were able to open Avast without any issues.

Také čtení: Jak odebrat Avast z Windows 10

Metoda 7: Spusťte antivirovou kontrolu

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.

Proto vám doporučujeme prohledat počítač podle pokynů v naší příručce Jak spustím antivirovou kontrolu v počítači?

Pokud chcete malware z počítače odstranit, projděte si naši příručku Jak odstranit malware z počítače v systému Windows 10.

Metoda 8: Aktualizujte systém 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.

Proto se ujistěte, že jste aktualizovali svůj operační systém Windows a zda nějaké aktualizace čekají v akci, použijte naši příručku Jak stáhnout a nainstalovat nejnovější aktualizaci Windows 10

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

Metoda 9: Upravte nastavení brány Windows Defender Firewall

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.

Možnost II: Zakázat bránu firewall (nedoporučuje se)

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.

Možnost III: Vytvořte nové pravidlo v bráně firewall

1. Jít do Nabídka Hledat a typ Windows Defender Firewall s pokročilým zabezpečením. Poté klikněte na Spustit jako správce.

2. Nyní v levém podokně klikněte na Příchozí pravidla jak je znázorněno.

3. Poté v pravém podokně klikněte na Nové pravidlo… jak je znázorněno.

4. Nyní se ujistěte, že jste vybrali Program možnost pod Jaký typ pravidla byste chtěli vytvořit? a klepněte na Další> jak je znázorněno.

5. Poté klikněte na Procházet… tlačítko odpovídající Tato cesta programu: jak je znázorněno.

6. Poté přejděte na C:Program Files (x86)Avast cestu a dvakrát na ni klikněte Nastavení file. Then, click on Otevřená .

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

7. Poté klikněte na Následující> v Průvodce novým příchozím pravidlem okno, jak je znázorněno.

8. Nyní vyberte přepínač vedle Povolit připojení a klepněte na tlačítko Následující> jak je znázorněno.

9. Ujistěte se, že Doména, Soukromá a Veřejná boxy jsou vybrány a klikněte na Následující> jak je znázorněno.

10. Nakonec přidejte název nového pravidla a klikněte na úprava.

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

Metoda 10: Opravte 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. Zahájení Avast Antivirus and navigate to Nabídka> Nastavení jako jste to udělali dříve.

2. Dále přepněte na Řešení problémů Karta.

3. Zde klikněte na Opravná aplikace in the right pane. Wait until the repairing process is complete. This might take a while.

Poznámka: 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. Typ Přidání nebo odebrání programů v Hledání v systému Windows box. Launch it from the search result, as shown.

2. V Prohledejte tento seznam bar, typ Avast.

3. Poté klikněte na Avast a pak, Upravit.

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

4. Klikněte na Opravy 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.

Také čtení: 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.

Poznámka: 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. Zahájení Avast a klepněte na tlačítko Menu možnost v pravém horním rohu obrazovky.

2. Nyní vyberte Nastavení z rozevíracího seznamu.

3. Poté přejděte na obecně tab and then select click on Řešení problémů volba.

4. Poté vyberte Obnovit do základního nastavení .

5. If you are prompted, click on Ano 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.

Návštěva Avast official uninstaller sitea poté klikněte na avastclear.exe to get the Avast Uninstall Utility, as shown below.

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

1. Typ Windows konfigurace systému in the Windows search bar. Then, click on Konfigurace systému spustit.

2. Přepněte na Bota tab in the window that opens.

3. Dále vyberte Bezpečné boot under Boot options and then, click on OK, Jak je ukázáno níže.

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 jste si dříve stáhli.

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

7. Nyní klikněte na Odinstalovat.

8. After Avast has been uninstalled, Restart Windows ve Windows Normální mód.

9. Visit this official Avast link a pak klikněte na tlačítko STÁHNĚTE SI OCHRANU ZDARMA to download the latest Avast Antivirus application, as shown below.

10. Once the file is downloaded, do to Moje stahování, dvakrát klikněte na 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.

Také čtení: Jak odinstalovat McAfee LiveSafe ve 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 Kontaktujte nás .

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.

Často kladené otázky (FAQ)

Q1. Why does my Avast not updating virus definitions?

Ans. Pokud existují 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?

Ans. 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?

Ans. If the Avast browser does not open on your Windows 10 PC, it may be because it is outdated or not updated properly. Málo 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?

Ans. Být přesnější, 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.

Doporučená:

Doufáme, že vám tento návod pomohl a mohl fix Avast not updating virus definitions issue in your system. Let us know which method worked for you the best. Also, if you have any queries/suggestions regarding this article, then feel free to drop them in the comments section.