Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Avatar for Username

Mozilla サポートの検索

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

このスレッドはアーカイブに保管されました。 必要であれば新たに質問してください。

Why can't I use Avast

  • 1 件の返信
  • 5 人がこの問題に困っています
  • 5 回表示
  • 最後の返信者: Svetlana

burkcat
burkcat
more options

I have been using the free Avast software for over a year and just purchased the advanced Avast Internet security software a couple days ago. This morning I downloaded the new version of Firefox and it said it disabled Avast since it is not compatible!!! I will now have to revert to the old version of Firefox or go back to Windows Explorer. This makes me unhappy. Why would you make a version of Firefox that is not compatible with a security system?

I have been using the free Avast software for over a year and just purchased the advanced Avast Internet security software a couple days ago. This morning I downloaded the new version of Firefox and it said it disabled Avast since it is not compatible!!! I will now have to revert to the old version of Firefox or go back to Windows Explorer. This makes me unhappy. Why would you make a version of Firefox that is not compatible with a security system?

すべての返信 (1)

Svetlana
Svetlana
more options

You can try this extension to override compatibility issues,

Once it is installed, open Addons Manager and re-enable Avast addon.

Addons Manager URL:    about:addons