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Cannot download files. The popup window with "Save File" and "Cancel" buttons does not appear when I click on download.

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When I click on "download", the popup window with "Save File" and "Cancel" buttons does not appear . If I disable all add-ins and plug-ins (there are only three of them) and then restart Firefox, it does not fix the problem. However, if I open Firefox in Safe Mode, it works fine. I have an old profile which uses the same add-ins and it works fine. I have FF 66.0.5. I'm not sure if the problem was created by an update.

When I click on "download", the popup window with "Save File" and "Cancel" buttons does not appear . If I disable all add-ins and plug-ins (there are only three of them) and then restart Firefox, it does not fix the problem. However, if I open Firefox in Safe Mode, it works fine. I have an old profile which uses the same add-ins and it works fine. I have FF 66.0.5. I'm not sure if the problem was created by an update.

Modified by _Howard

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Additional System Details

Installed Plug-ins

OpenH264 Video Codec provided by Cisco Systems, Inc.

Add-Ons:

AdBlocker Ultimate NoCoin

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0

More Information

FredMcD
  • Top 10 Contributor
4074 solutions 56842 answers

https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode

Safe Mode is a troubleshooting mode that temporarily turns off hardware acceleration, resets some settings, and disables add-ons (extensions and themes). If the problem goes away, that tells us one thing. If it does not, that tells us something else.


It could be Hardware Acceleration. How to disable Hardware Acceleration {web link}

https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Safe Mode is a troubleshooting mode that temporarily turns off hardware acceleration, resets some settings, and disables add-ons (extensions and themes). If the problem goes away, that tells us one thing. If it does not, that tells us something else. It could be '''Hardware Acceleration. ''' ''[https://support.mozilla.org/en-US/kb/forum-response-disable-hardware-acceleration How to disable Hardware Acceleration]'' {web link}
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Question owner

I had tried disabling hardware acceleration and it didn't fix it.

Keep in mind that the problem does not occur when I use a different profile which has the same add-ons and plug-ins, and uses hardware acceleration.

If I enable the add-ons and plug-ins while in safe mode, the problem does not occur. Safe mode is changing something else in the profile that is eliminating the problem.

I had tried disabling hardware acceleration and it didn't fix it. Keep in mind that the problem does not occur when I use a different profile which has the same add-ons and plug-ins, and uses hardware acceleration. If I enable the add-ons and plug-ins while in safe mode, the problem does not occur. Safe mode is changing something else in the profile that is eliminating the problem.
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cor-el
  • Top 10 Contributor
  • Moderator
17084 solutions 154305 answers

Try to uninstall Adblock Plus and possibly try uBlock Origin instead. https://addons.mozilla.org/firefox/addon/ublock-origin/

Try to uninstall Adblock Plus and possibly try uBlock Origin instead. https://addons.mozilla.org/firefox/addon/ublock-origin/
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cor-el
  • Top 10 Contributor
  • Moderator
17084 solutions 154305 answers

If you use a userChrome.css file in the chrome folder in the profile folder then try to rename/remove this fill (userChromeSAV.css).

You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.

If you use a userChrome.css file in the chrome folder in the profile folder then try to rename/remove this fill (userChromeSAV.css). You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the <b>about:profiles</b> page. *Help -> Troubleshooting Information -> Profile Directory:<br>Windows: Show Folder; Linux: Open Directory; Mac: Show in Finder *http://kb.mozillazine.org/Profile_folder_-_Firefox
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Question owner

Gave that a try. No joy. Thanks for the suggestion.

Gave that a try. No joy. Thanks for the suggestion.
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Question owner

I have already uninstalled Adblock. No help. I really don't think it has anything to do with add-ons.

I have already uninstalled Adblock. No help. I really don't think it has anything to do with add-ons.

Modified by _Howard

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FredMcD
  • Top 10 Contributor
4074 solutions 56842 answers

I would suggest creating a new profile. Copy the bookmarks and password files to the new profile but nothing else.

Add-ons should be downloaded fresh.

I would suggest creating a new profile. Copy the bookmarks and password files to the new profile but nothing else. Add-ons should be downloaded fresh.
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cor-el
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You did close and restart Firefox after disabling hardware acceleration in Firefox?

You did close and restart Firefox after disabling hardware acceleration in Firefox?
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