I am enjoying my upgrade of Windows 10 except for I can't sign-in with my Microsoft account. I went from Windows 7 Pro to Windows 10 Pro. I can log in with a local account (same as Windows 7). I can't download any apps from the Windows Store, Microsoft Edge doesn't work like it should. Any suggestions? BTW, when I click on "sign in with Microsoft account instead" in the settings, a window wants to pop up but suddenly disappears. Thanks for any help.