Firefox crashes when downloaded files are checked by virus scan

Revision Information
  • Revision id: 17212
  • Created:
  • Creator: scoobidiver
  • Comment: removed to-be-archived article links, removed download history, Prism extension, UA sections (fixed in 3.5), Download Embedded section (compatible up to Fx 3.0), Norton section (fixed in 2009), reworded section about scanning
  • Reviewed: Yes
  • Reviewed:
  • Reviewed by: mluna
  • Is approved? Yes
  • Is current revision? No
  • Ready for localization: Yes
  • Readied for localization:
  • Readied for localization by: mluna
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This article covers the situation where Firefox displays a message about crashing when you try to download files or save images.


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:

  1. Type about:config in the address bar and press EnterReturn.
    A warning page may appear. Click Accept the Risk and Continue to go to the about:config page.
  2. Locate the browser.download.manager.scanWhenDone preference and double click it to change the value to false.