I really like Win7, it's fairly stable, as Windows goes. But I've needed to get a Windows 10 laptop at work, as my company is migrating from Zimbra (linux based Email) to Office 365 (Exchange Online,) and Windows 7 simply can't be used for much of the administrative work. Even though you can load PowerShell 4 on Windows 7, the underlying architecture won't allow the plug-ins to work properly. And even some of the administrative web sites won't run on Win7 (for instance, the security and compliance admin site in Office 365.)
Mark
That explains the problems (outside of an old cheap W7 laptop that's dying) that Grandma's having with her Exchange email setup.
I guess the most economical fallback is to go get another cheap laptop with W10 and use it strictly for Exchange (which she usually monitors and does most of her responses using her iPad anyway) while I'm working out the wrinkles on the conversion of the Big Mutha Desktop to Unix with everybody else in VM.
...aggravating bunch of geeks....