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Correction d'Avast ne mettant pas à jour les définitions de virus
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- Outdated Avast will cause the discussed problem.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.
- Système d'exploitation Windows obsolète.
- 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.
Méthode 1: Redémarrer le 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 arrêter the PC using the Power options and turn it on again after some time.
1. Aller vers menu Démarrer.
2. Maintenant, sélectionnez icône de puissance dans le coin inférieur gauche de l'écran.
3. Plusieurs options comme Apnee, arrêteret la Recommencer sera affiché. Ici, cliquez sur Recommencer.
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. Faites un clic droit sur Avast Icône antivirus sur le bureau.
2. Maintenant, cliquez sur Propriétés.
3. Dans la fenêtre Propriétés, passez à Compatibilité languette.
4. Ici, cochez la case Exécuter ce programme en tant qu'administrateur année.
5. Enfin, cliquez sur Appliquer> OK pour enregistrer les modifications.
Now, relaunch the program to see if Avast functions now without any problems.
Lisez aussi: Correction de l'échec de la définition du virus dans Avast Antivirus
Méthode 3 : modifier les paramètres de date et d’heure
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. appuie sur le Touches Windows + I ensemble pour ouvrir Paramètres Windows.
2. Maintenant, sélectionnez Heure et langue réglage.
3. Ensuite, dans Date et heure onglet, assurez-vous que les deux valeurs Réglez l'heure automatiquement ainsi que le Réglez le fuseau horaire automatiquement les options sont activées.
4. Cliquez ensuite sur Synchroniser maintenant 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. Frappez le Touche Windows et le type Avast Antivirus Gratuit. Cliquez sur Ouvert à partir du résultat de la recherche.
2. Aller à Menu icon from the top right corner of the Avast user interface.
3. Ensuite, sélectionnez Paramètres de la liste.
4. Maintenant, passez à Mises à jour onglet et cliquez sur Vérifier la mise à jour button. Make sure you get the following messages.
- Les définitions de virus sont à jour
- Avast Free Antivirus is up to date
5. Once you have updated it, restart Avast and check if the issue has been solved.
Lisez aussi: Comment réparer la mise à jour Avast bloquée sur Windows 10
Méthode 5 : fermer les processus en arrière-plan
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. appuie sur le Touche Windows, Le type Services, Et cliquez sur Exécuter en tant qu'administrateur.
2. Maintenant, faites défiler vers le bas et double-cliquez sur aswbIDSAgent après-vente.
3. Now, in the new pop-up window, change Type de démarrage to Automatic, as depicted.
Remarque: Si la Statut du service is Arrêté, puis cliquez sur le Accueil bouton. Si la Statut du service is Fonctionnement, cliquer sur Arrêter et redémarrez-le.
4. When you start the service, you may face a 1079 error (or something similar to that). In this case, switch to the connecter onglet, cliquez sur le Ce compte bouton radio et sélectionnez le Explorer option.
5. dans le Entrez le nom de l'objet pour sélectionner field, type the username of your account.
6. Cliquez ensuite sur Vérifier les noms option to authenticate the object name.
7. Maintenant, cliquez sur OK to save the changes and if you are prompted, type in your administrator account.
8. Cliquez sur Appliquer> OK to save the changes and check if you were able to open Avast without any issues.
Lisez aussi: How to Remove Avast from Windows 10
Méthode 7 : exécuter une analyse antivirus
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.
Par conséquent, il vous est conseillé d'analyser votre ordinateur comme indiqué dans notre guide Comment exécuter une analyse antivirus sur mon ordinateur ?
De plus, si vous souhaitez supprimer les logiciels malveillants de votre ordinateur, consultez notre guide Comment supprimer les logiciels malveillants de votre PC sous Windows 10.
Méthode 8: mettre à jour 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.
Par conséquent, assurez-vous si vous avez mis à jour votre système d'exploitation Windows et si des mises à jour sont en attente, utilisez notre guide Comment télécharger et installer la dernière mise à jour de Windows 10.
After updating your Windows Operating System, check whether you can access your Avast without any issues.
Méthode 9 : modifier les paramètres du pare-feu 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.
Option II : désactiver le pare-feu (non recommandé)
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.
Option III : Créer une nouvelle règle dans le pare-feu
1. Aller à Menu de recherche et le type Pare-feu Windows Defender avec sécurité avancée. Cliquez ensuite sur Exécuter en tant qu'administrateur.
2. Maintenant, dans le volet de gauche, cliquez sur Règles entrantes tel que représenté.
3. Ensuite, dans le volet de droite, cliquez sur Nouvelle règle… comme montré.
4. Maintenant, assurez-vous de sélectionner le Programme option sous Quel type de règle souhaitez-vous créer ? menu et cliquez sur Suivant> comme montré.
5. Cliquez ensuite sur le Parcourir ... bouton correspondant à Ce chemin de programme : comme montré.
6. Ensuite, accédez à C:Program Files (x86)Avast chemin et double-cliquez sur installation file. Then, click on Ouvert .
Remarque: This location may vary according to the directory from which you have installed Avast. Browser the location accordingly.
7. Cliquez ensuite sur Suivant> dans les Assistant Nouvelle règle entrante fenêtre comme indiqué.
8. Maintenant, sélectionnez le bouton radio à côté de Autoriser la connexion et cliquez sur Suivant> tel que représenté.
9. Assure-toi Domaine, privé et public les cases sont sélectionnées et cliquez sur Suivant> comme montré.
10. Enfin, ajoutez un nom à votre nouvelle règle et cliquez sur Finition.
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. lancement Avast Antivirus and navigate to Menu > Paramètres comme vous l'avez fait plus tôt.
2. Ensuite, passez à Dépannage languette.
3. Ici, cliquez sur Application de réparation in the right pane. Wait until the repairing process is complete. This might take a while.
Remarque: 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. Type Ajouter ou supprimer des programmes dans les Recherche Windows box. Launch it from the search result, as shown.
2. dans Rechercher dans cette liste barre, type Avast.
3. Cliquez ensuite sur Avast et ensuite, modifier.
Remarque: The below image is depicted for reference. Follow the same for Avast.
4. Cliquez sur réparation 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.
Lisez aussi: 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.
Remarque: 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. lancement Avast et cliquez sur Menu option dans le coin supérieur droit de l’écran.
2. Maintenant, sélectionnez Paramètres dans la liste déroulante.
3. Ensuite, accédez à Général tab and then select click on Dépannage option.
4. Ensuite, sélectionnez Réinitialiser par défaut .
5. If you are prompted, click on Oui 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.
Visiter 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. Type Windows configuration du système in the Windows search bar. Then, click on Configuration du système pour le lancer.
2. Passer à la botte tab in the window that opens.
3. Ensuite, sélectionnez Démarrage sécurisé under Boot options and then, click on OK, comme indiqué ci-dessous.
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 vous avez précédemment téléchargé.
6. In the uninstall utility window, ensure that the correct folder containing the corrupt Avast program is selected.
7. Maintenant, cliquez sur Désinstaller.
8. After Avast has been uninstalled, Recommencer Windows dans Mode normal.
9. Visit this official Avast link puis cliquez sur TÉLÉCHARGER LA PROTECTION GRATUITE to download the latest Avast Antivirus application, as shown below.
10. Once the file is downloaded, do to Mes Téléchargements, double-cliquez sur le 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.
Lisez aussi: Comment désinstaller McAfee LiveSafe sous 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 Contactez-Nous .
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.
Foire aux questions (FAQ)
Q1. Why does my Avast not updating virus definitions?
Ans. S'il y en a 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. Peu 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. Être plus précis, 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.
Recommandée:
Nous espérons que ce guide vous a été utile et que vous pourrez 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.