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Whenever I download a file with Firefox, I can no longer go to any new URLS, or run searches; I have to exit & restart to get it working again.

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I'm running Windows 7 Enterprise-64 bit, SP1 I have tried resetting Firefox & have tried re-installing it. Neither made any difference. It does not seem to matter what type of file I download. Once I have downloaded any file, I am unable to connect to any other sites, getting an error indicating that the site cannot be found. I get the same effect if I try to use a bookmark, or if I type in the URL.

I'm running Windows 7 Enterprise-64 bit, SP1 I have tried resetting Firefox & have tried re-installing it. Neither made any difference. It does not seem to matter what type of file I download. Once I have downloaded any file, I am unable to connect to any other sites, getting an error indicating that the site cannot be found. I get the same effect if I try to use a bookmark, or if I type in the URL.

Chosen solution

Try below.

  1. In the Location bar, type about:config and press Enter. The about:config "This might void your warranty!" warning page may appear.
  2. Click I'll be careful, I promise!, to continue to the about:config page. A list of settings should appear
  3. Filter the list by typing in the search bar at the top. Type in scanWhenDone. You should now find the "browser.download.scanWhenDone" preference.
  4. Double-click on that preference to set the value to false.
  5. Next, try to download something and see if it still has issues.
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Chosen Solution

Try below.

  1. In the Location bar, type about:config and press Enter. The about:config "This might void your warranty!" warning page may appear.
  2. Click I'll be careful, I promise!, to continue to the about:config page. A list of settings should appear
  3. Filter the list by typing in the search bar at the top. Type in scanWhenDone. You should now find the "browser.download.scanWhenDone" preference.
  4. Double-click on that preference to set the value to false.
  5. Next, try to download something and see if it still has issues.
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Thank you! Worked like a charm!