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Failed to execute default Web Browser *SOLVED*

Posted: Tue Nov 06, 2018 9:03 am
by nemo
I'm using MX 17.1 and use Waterfox as my web browser. Clicking on web links in emails (Thunderbird) opens Waterfox without any issues. But clicking on a link from a document results in the following error message:
Failed to execute default Web Browser.
Failed to execute child process "/opt/waterfox/waterfox" (No such file or directory).
There is a Waterfox folder in /opt but that just seems to contain an updater. Waterfox is installed in /usr/lib with a link in /usr/bin
I've looked in MIME Type editor, Alternatives Configurator and Waterfox is set as the default browser.
I assume that there must be a file/setting that needs to be changed so that the correct path is set.
Where is that please?

Re: Failed to execute default Web Browser

Posted: Tue Nov 06, 2018 10:52 am
by fehlix
nemo wrote:
Tue Nov 06, 2018 9:03 am
Where is that please?
Settings -> Preferred Applications
If Waterfox is not listed or points to an old or invalid entry
select -> Other
and enter

Code: Select all

/usr/bin/waterfox "%s"
Welcome the the forum!

Re: Failed to execute default Web Browser

Posted: Tue Nov 06, 2018 2:55 pm
by Stevo
How was Waterfox installed?
If you installed with the Package Installer and you're running 64-bit, can you uninstall it and install it from our test repo to see if it has the same problem?

Re: Failed to execute default Web Browser

Posted: Wed Nov 07, 2018 5:24 am
by nemo
fehlix wrote:
Tue Nov 06, 2018 10:52 am
nemo wrote:
Tue Nov 06, 2018 9:03 am
Where is that please?
Settings -> Preferred Applications
If Waterfox is not listed or points to an old or invalid entry
select -> Other
and enter

Code: Select all

/usr/bin/waterfox "%s"
Welcome the the forum!
Many thanks, that did the trick.

Re: Failed to execute default Web Browser *SOLVED*

Posted: Thu May 30, 2019 4:20 pm
by sunbun09
I was having the same issue with this thing when I ran XFCE4 on WSl on Windows 10 1903. The code that fixed my issue was simple.



First of all as a normal user type firefox in the terminal and read what the error says. If root or any other user is the owner of the home folder then proceed as following:

go sudo -s
enter your password
then in root mode type
chown [username] ~/

Thanks!