---
title: "Thunderbird issues after updating Avast Antivirus"
description: "Issue: There are reported issues with Thunderbird, after a recent update to Avast antivirus software. Who is impacted? Thunderbird users who recently updated their Avast antivirus software. Why is..."
url: https://www.inmotionhosting.com/support/email/thunderbird-avast/
date: 2015-08-27
modified: 2020-10-13
author: "InMotion Hosting Contributor"
categories: ["Email"]
type: post
lang: en
---

# Thunderbird issues after updating Avast Antivirus

| Issue: | There are reported issues with [**Thunderbird**](https://www.inmotionhosting.com/support/email/creating-an-email-account-in-thunderbird/), after a recent update to **Avast antivirus** software. |
| --- | --- |
| Who is impacted? | Thunderbird users who recently updated their Avast antivirus software. |
| Why is this happening? | A recent Avast update, seems to cause problems when it scans the **Thunderbird Profile** folder. For more information, see [this post](https://support.mozilla.org/en-US/questions/1076520) in the official Thunderbird Support forums. |

## What should I do?

- Exclude your Thunderbird [profile folder](https://kb.mozillazine.org/Profile_folder_-_Thunderbird) from Avast Antivirus scans. This is covered in Avast’s official Technical support guide on [How to exclude certain files, programs, or websites from scanning](https://www.avast.com/faq.php?article=AVKB168).