In most cases, the issue is reported to occur after an unexpected machine shutdown or after a security scanner ended up quarantining some items that were used during the updating function. Updating Avast Antivirus to the latest version Method 2: Repairing the Avast applicationĪ partially corrupted Avast application can also contribute to the apparition of the ‘ Virus definitions update failed. If you are prompted to restart do so, then open the application once again and see if the issue is resolved.Inside the Update sub-tab, just click on the Check for updates button and wait until the process is complete.Once you’re inside the Settings menu, select the General tab from the list of main tabs, then select the Update sub-tab.After you do this, click on the Settings menu from the newly appeared context menu.Open Avast Antivirus and click on the Menu icon (top-right corner).Since Avast already managed to fix the issue, the fix should be as simple as installing ensuring that you’re running the latest version of Avast Antivirus This ends up forcing the virus signature updating function to display an error, even though the update installed correctly and the virus protection signature was up to date.
The problem occurred due to a bad date that was being pushed along with the update. Method 1: Update Avast app to the latest versionĪs it turns out, the vast majority of os users reports claiming to encounter this error were actually being caused by an Avast bug that was resolved since version 6.16. In this case, you can force the application to repair itself via the built-in troubleshooter. If your application is unable to update, it’s probably due to the fact that some files have been affected by corruption. So the best chance at solving the issue clean and efficient, you should simply update your Avast Antivirus to the latest version available.
In most cases, this issue is caused by a bug that Avast already manage to resolve along with version 6.16. Virus definitions update failed in Avast Why does the Virus Definitions Update fails? The issue is reported to occur on both the Free and the Premium version of Avast. Downloading of VPS failed‘ error is encountered on Avast Security for Desktop and Mobile by users that are actively trying to update the virus definitions.
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