Firefox 13.0b1 and Nightly. With profiles created using ProfileManager, about:support does not show the “Reset Firefox” button. It is in the page’s code, but not displayed.

I can confirm this. The code that makes the 'reset' button visible is here: http://mxr.mozilla.org/mozilla-central/source/toolkit/content/aboutSupport.js#623 My initial guess is that this happens because we're launching with a profile path and not a profile name.

Reset Firefox is only available if you are running the default (selected) profile. The decision was made in Bug 717070 comment 6 to avoid having to pass the profile name and path between processes.

(In reply to Matthew N. [:MattN] from comment #2) > Reset Firefox is only available if you are running the default (selected) > profile. The decision was made in Bug 717070 comment 6 to avoid having to > pass the profile name and path between processes. The platform should be changed to 'all' as I'm experiencing this on Win7 as well. I read the referenced comment and can understand that this is considered a 'normal' user tool and the assumption is that anyone with multiple profiles are advanced users and don't need something like this. However, it would still be a useful feature (certainly a time saver). In addition, it would allow support folks who use multiple profiles to do testing and troubleshooting.

I cannot confirm this. Just reset a UX Nightly with a custom profile.

(In reply to Florian Bender from comment #4) > I cannot confirm this. Just reset a UX Nightly with a custom profile. See comment 2. It will work as long as it's the default/selected profile. Note that this bug is about the ProfileManager utility, not Firefox's built-in profile manager.

Sorry, didn't get that at first. I did use the internal profile manager, however it was not the default profile (though I selected it when starting Fx).

Jaws gave a good possible justification for this bug: > <jaws> reason, because it makes it much more complicated to do the reset when there are multiple profiles. justification, users with multiple profiles are expert enough to delete the profile, or something like that ;) I think we can improve on this without overercomplicating things, though. When the reset button is not available on about:support, why not replace it with a button that summons the profile manager? Something like "If you're having major problems which you can't resolve, start fresh with a new profile". People who are on a different profile can then just use the profile manager (I'm assuming that they know how to, which seems reasonable)

Preferred text would be, "If you're having major problems, I feel bad for you son. I got 99 problems but Firefox ain't one. [Reset me!]" Reference: http://www.youtube.com/watch?v=WwoM5fLITfk

I'm confirming this bug in Nightly 30.0a1 (2014-02-16) and 30.0a1 (2014-02-17). Reset button is visible when turn off styles (menu View > Page style > No style).

(In reply to Grzegorz from comment #9) > I'm confirming this bug in Nightly 30.0a1 (2014-02-16) and 30.0a1 > (2014-02-17). Reset button is visible when turn off styles (menu View > Page > style > No style). The bug still occurs in Nightly 31.0a1 (2014-04-11)

I think bug 1265368 will fix this assuming the ProfileManager tool is updating profiles.ini

Can you see if this is fixed on tomorrow's Nightly please? If so, please dupe to bug 1265368. Thanks!

It's fixed in 49.0a1 2016-05-07. Thank you for taking care of this.