It took me ~20 minutes overall for the download and install. All I had to do was press &quot;start&quot; really, and let it do it&#x27;s thing.<p>I only had to re-install BitDefender, everything else worked right away.<p>I&#x27;m only just annoyed that the Charms menu is gone. I had used Windows 8 since the developer preview so I was used to that in my workflow. Not a huge issue though.