Students of that last refuge of the incompetent - the DWP - may care to take a look at this part of their website.
It relates (inter alia) to claiming DLA.
This details the operating systems and web browsers that their on-line claiming procedure is designed to work with.
For anyone who wonders why I am laughing so badly that I am in danger of doing something rather childish, most of the named operating systems are more than ten years out of date, and the named version of Firefox (V1) is nine years old. I am (for example) currently using V 20. They specifically exclude Apple Macs and “other Unix based systems”
To be fair to the DWP, most of the current versions of Windows will run some of the stuff written for the earlier versions. But, in the continued interests of fairness, one wonders why they could not give some office junior the task of checking what modern systems/software their archaic stuff will actually run on. Whilst it is tempting to blame IDS for this, it must be pointed out that the screw-up does predate his tenure. It must also be pointed out that the webpage has been updated within the last year or so - since it refers to the Government’s policy on cookies - which came into effect in 2011.