I have reserved Windows 10 for July please could anyone tell me what happens to my stored passwords when I upgrade because I can't remember all of them.
Provided the installation process doesn't destroy your browser cache or your cookies then your passwords should still be saved
And it shouldn't' really do that
The biggest danger in the past might have been Internet Explorer which used to be part of Windows - and which I believe disappears with Windows 10 - but it should not touch that