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I keep getting the Failed to Execute Default File Manager for when I try to open files from Firefox. The other error I get is I can't use any shortcuts to get to folders from the panels. I only can use the desktop to get to any folder. Any ideas on how to fix this? I figured I could reset the File Manager. Can this be done? if so, how?

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    Run this command: exo-preferred-applications and go to Utilities tab and in File Manager selection list chose your preferred file manager. You would get Nautilus if it is installed in your system. Chose that if you want to set it as default and close. Reply what happens..
    – Saurav Kumar
    Oct 9, 2013 at 16:52
  • @SauravKumar Okay, since I'm running on Xubuntu, I have Thunar installed but no Nautilus. I did what Mitch said to do below and than what you just posted here (Dropbox started working) sta and made Nautilus my default file manager. Everything works now. It seems there probably something wrong with Thunar (the default file manager for Xubuntu). Thanks for the help though. Wish I could give you credit too but I don't have enough reputation points.
    – user2784630
    Oct 11, 2013 at 15:47
  • It's good to know that your problem is solved..
    – Saurav Kumar
    Oct 11, 2013 at 15:53

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Reset to default
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What worked for me was https://askubuntu.com/users/124963/saurav-kumar answer

Run this command: exo-preferred-applications and go to Utilities tab and in File Manager selection list chose your preferred file manager. You would get Nautilus if it is installed in your system. Chose that if you want to set it as default and close.

I wanted to set dolphin as my default file manager so installing nautilus isn't the solution.

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Try this. Just press Ctrl+Alt+T on your keyboard to open Terminal. When it opens, run the command(s) below:

sudo apt-get --reinstall install nautilus
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  • Thanks, was using Thunar since I have Xubuntu installed. This installed Nautilus for the first time, made it my default file manager and everything works now.
    – user2784630
    Oct 11, 2013 at 15:51
  • Damn. So I realized that I had removed file tracker-miner-fs together with nautilus because it was hogging my CPU. Today I could not open files, they kept opening in the next program on the recent list of 'Open With..' menu.
    – chx101
    Sep 21, 2021 at 19:35

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