I have been trying to sort a CSV with a million rows and about 20 columns in Excel 2013 (64bit). Excel doesn't seem even bother trying - it's simply ignoring the command as far as I can see. There's not even a spike in the CPU monitor on the Task Manager.
What could possibly be the reason for this?
PS: I'm using a HP ZBook 15 G2 (F1M34UT) Mobile Workstation: Windows 8.1 Pro, 32GB Memory, 1TB Samsung 850 EVO SSD, Intel Core i7 4810MQ (2.80 GHz) - Quad Core with NVIDIA Quadro K1100M graphics card. My colleague's far less powerful laptop (8GB RAM, Intel Dual Core) easily handles the sort on the same file.