At least it's not Android, either. I don't use Windows, but for me the Android OTA upgrade to Oreo on my Nexus 6P has been disastrous for use with the QC35s. I have to reboot the awful thing several times a day to get consistent BT audio, and it will happily chew through the battery several times a day too, unless I leave it on charge for periods. Been with Android since the G1, but I'm seriously thinking about switching to iOS because I'm just so frustrated on a daily basis with this awful release, which seems barely tested. I do wonder at which point I switched from the optimist's "oh yay, an update!" to the pessimist's "oh shit, here comes a boatload of careless regressions".