I took the chances and I updated to W10 in my secondary computer. Absolutely NO problems, I'm working on PT HD10, everything works great, even better, PT opens & closes faster than ever, and the CPU power increased a little bit (a session that in W7 consumed 67% now it consumes 59%, plus, it can handle 29 more heavy plugins, I overloaded every stereo channel with Waves Aphex Vintage Exciter in W7 and in W10 after the update, and the results were quite pleasing) Then, I updated my main work computer, same result. No glitches, bugs or anything. Btw, my secondary PC is a Gigabyte intel pentium dual core 2.9GHz, 4GB RAM and 128 GB SSD with an external 1TB HDD, my main computer is also a Gigabyte but with an i3 3220 3.3GHZ, 8GB RAM, 256 GB SSD, a Western Digital 1TB HDD and an extrenal e-sata Seagate 2TB HDD.