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Troubleshooting common issues with Avast Antivirus

Windows, Mac, Android, iOS

This article contains troubleshooting steps for common issues related to Avast Antivirus.

For general information about Avast Antivirus, refer to the relevant article below according to platform:

Why am I getting the error, "Sorry, something went wrong"?

This error commonly occurs when there is a problem with your device's DNS settings. To troubleshoot this issue, follow the steps below:

  1. Change your DNS settings so that Avast Antivirus can communicate with the appropriate server. To manage your DNS settings, refer to the following article:
  2. If you still see the error after changing your DNS settings, contact Avast Support, and include a screenshot of your most recent order confirmation email. To contact Avast Support, use the contact form linked below:

Why am I getting the error, "Well, this is embarrassing"?

This error commonly occurs when there are conflicts with Windows services configuration. For detailed troubleshooting steps, refer to the following article:

Why won't Avast Antivirus open?

This error commonly occurs when certain application files are outdated, corrupted, or missing. To troubleshoot this issue, follow the steps below:

Windows PC
  1. Repair the Avast Antivirus installation file. To repair the file, refer to the following article:
  2. Uninstall the application. For detailed uninstallation instructions, refer to the following articles:
  3. Re-install the application. For detailed installation instructions, refer to the following articles:
  4. If Avast Antivirus still fails to open, contact Avast Support, and include a screenshot of your most recent order confirmation email. To contact Avast Support, use the contact form linked below:

Mac
  1. Uninstall the application. For detailed uninstallation instructions, refer to the following articles:
  2. Re-install the application. For detailed installation instructions, refer to the following articles:
  3. If Avast Antivirus still fails to open, contact Avast Support, and include a screenshot of your most recent order confirmation email. To contact Avast Support, use the contact form linked below:

Android
  1. Uninstall the application. For detailed uninstallation instructions, refer to the following article:
  2. Re-install the application. For detailed installation instructions, refer to the following article:
  3. If Avast Mobile Security still fails to open, contact Avast Support, and include a screenshot of your most recent order confirmation email. To contact Avast Support, use the contact form linked below:

iPhone/iPad
  1. Uninstall the application. For detailed uninstallation instructions, refer to the following article:
  2. Re-install the application. For detailed installation instructions, refer to the following article:
  3. If Avast Mobile Security still fails to open, contact Avast Support, and include a screenshot of your most recent order confirmation email. To contact Avast Support, use the contact form linked below:

Why does Smart Scan stop before finishing a scan on my PC?

This error commonly occurs when certain application files are outdated, corrupted, or missing. To troubleshoot this issue, follow the steps below:

  1. Repair the Avast Antivirus installation file. To repair the file, refer to the following article:
  2. Uninstall the application. For detailed uninstallation instructions, refer to the following articles:
  3. Re-install the application. For detailed installation instructions, refer to the following articles:
  4. If Avast Antivirus still fails to open, contact Avast Support, and include a screenshot of your most recent order confirmation email. To contact Avast Support, use the contact form linked below:

Why is Avast Antivirus blocking the website I want to visit?

If Avast Antivirus blocks a website that you use regularly, you can add it to the Exceptions list, which prevents the defined website from being detected by Avast shields. For detailed instructions, refer to the following article:

DocID: troubleshoot-premium-securityLast modified: 10/23/2026

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