OK, even the warrant like that was corrupted into the devil level as if the company would be forced to hand over the data of the foreign customer by the US government but Microsoft is not giving up the fight and there are like already tens of thousands of such similar illegal requests. No proper reason why but it is that the warrant is in violation of the Constitution of United States and especially that the warrant is bound to invade the privacy of the one whose data is being surrendered. The on-going case may be getting in Microsoft's ways in planning to encrypt their services to protect their customers' privacy as well as to apply the new Terms of Service of freedom by the end of next month.
One example is some data from the Ireland Microsoft server in which that country was already conquered with some stupid law two years ago about censoring some shit online, leaving the rest of the globe to be safe from it.
Other good news includes the support from Apple, Cisco, AT&T, Verizon as well as EFF in which they can wish that they can get the US government to stop making use of domestic search warrants to demand data surrendering as it is already considered privacy invasion.