That's because update 1 doesn't include any previous updates, at least the current leak doesn't, not sure if that will change for RTM.
instal the update 1 without any rollup updates on win 8.1 pro clean installation @my friend pc works like charm worth taking a risk
Good news Wzor to announce that Windows 8.1 Update 2014 may be RTM sign off before 23 february. (Windows 8.1 update 1 ).
Installed here update 2919355 on clean Windows installation.I can confirm that my laptop Works like a charm...
lol what? That makes absolutely no sense. People will upgrade due to XP no longer being supported officially.
...and I'm sure a lot of them will upgrade to Windows 7 instead of 8.1, especially on the enterprise-side.