Having all sorts of compatibility problems with x64. Can I downgrade to XP
Pro? If so, will I need the full version or will an "upgrade" version work?

Re: downgrading by David

David
Tue Feb 20 12:32:51 CST 2007

free2bjmg <free2bjmg@discussions.microsoft.com> wrote:

> Having all sorts of compatibility problems with x64. Can I
> downgrade to XP Pro? If so, will I need the full version or will
> an "upgrade" version work?

Yes, you can use an upgrade version if you have a qualifying product CD
such as Windows 98 (x64 isn't a qualifying product) but you won't be
able to do an upgrade install, you'll have to do format the
drive/partition and do a full install.