Firefox crashes when downloaded files are checked by virus scan
This article is no longer maintained, so its content might be out of date.
This article covers the situation where Firefox displays a message about crashing when you try to download files or save images.
- For other crash related issues, see the Firefox crashes - Troubleshoot, prevent and get help fixing crashes article.
Firefox crashes when attempting to perform a virus scan
With some antivirus programs, the virus scan after files are downloaded may cause Firefox to crash. You can disable virus scanning in Firefox with the following steps:
- In the address bar, type about:config and press EnterReturn.
A warning page may appear. Click to continue to the about:config page.
- Locate the browser.download.manager.scanWhenDone preference and double click it to change the value to false.