Daniel wrote:
https://turbotax.intuit.com/personal-taxes/online/system-requirements

According to this, it's not just browser support, they don't support linux at all.

Android is based on Linux, isn't it??

And what difference would it make what OS you are using to run your preferred Browser which would then be sending a series of 'Ones' and 'nones' from your modem to their modem??

If all the interface is browser-based, then it really doesn't matter what the underlying platform is. I do find it interesting that the site indicates that Windows 7 is OK, as is Mac all the way back to Mavericks. Plus that Opera is on the list of acceptable browsers.

Something that I've noticed with sites that demand only certain browsers (and levels) is that what they're communicating usually doesn't match with the reality of interacting with their sites. Years ago, for sites that demanded *only* Internet Explorer, that made sense, as that was generally an indication that the site used ActiveX scripting, but that's not happening anymore.

If a site specifies that you *must* be running Chrome, Firefox, Safari or Edge, it's frequently a matter of what the site's tech support people are willing to interact with, especially with UI navigation to specific settings. If they say "Firefox", they want to be able to tell you to go to Tools -> Options -> [whatever setting] and tell you to click X and Y, and be done with it. For them, it doesn't matter that Seamonkey is also a Gecko browser with all the same capacities, if the navigation to get to those settings is unfamiliar: Edit -> Preferences -> and an entirely different menu of options. In that sense, those of us that run Seamonkey are at more of a disadvantage than users of Palemoon and Waterfox, because the others have config UIs that are much closer to current versions of Firefox. I've found this effect most common with financial institutions.

I know that there are sites that do demand at least Firefox 60, but I'm not aware of anything out there that actually requires stuff that is unique to Gecko 60. Maybe there's a few out there that expect you to install a WebExtensions add-on, but I haven't seen any. That's the only reason I can think of for a technical reason to require Firefox 60.

The other thing on demanding particular browsers and versions (and O/S levels) is that there is something to be said for ensuring minimum versions that have some measure of currency of security patches. On my own site, I do block access to Firefox versions older than 52, as well as blocking access to Windows versions older than Win 7 and Mac versions older than Sierra. Part of it is that I want to discourage people from running really old stuff that's no longer being maintained. However, in a similar way, I've found that the bulk of traffic that hits my site that purports to be from older systems is mostly bot traffic that I don't want at my site anyway. For that, I don't bother with script-based sniffing to deliver a warning message. Instead, I go the route of using regular expressions in the .htaccess file, and if a UA string shows a Firefox version older than 50 or that it's running Windows XP, I just drop the connection.

On this, I will note that my site does get some volume of traffic that claims to be running Firefox 40.1 (a version that was never valid), and dropping those connections immediately is a zero-loss proposition, plus less bandwidth wasted, and cleaner access statistics.

Circling back to Seamonkey, my experience is that nearly all the time, if a site demands certain params for browser and O/S, if your browser UA string shows something that's acceptable to them, you shouldn't have problems interacting, regardless of what browser and O/S combination that you're actively using.

Smith


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