A word of warning for win10 users if travelling. Because win10 update cannot be switched off except by brute force in services ( not even sure that works), if you use win10 on a laptop you travel with, when you link to a net in a hotel etc etc, it can attempt to run a update which you cannot stop ( do NOT stop it in services if it has started as it can lock up future updates as can previous windows versions). This will virtually lock up you device and use a lot of download ( a problem if you are on a prepaid stick or using you mobile as a hot spot). Lower lowered laptops will also run VERY slow to unusable.
If you have a a win 10 machine, while still at home, just before you leave, run an update ( several times if necessary to ensure all updates have actually loaded). Then go to Services and disable windows update ,until you get to a place where you have unfettered download and don't need you device for a while. Then go to services and re-enable repeating the above process.
Be aware I am relaying the effectiveness of turning it off in services. I haven't tried it yet and there may be other ramifications.