This is corrected. Please ignore my last post. Now you can try the Service Pack 1 beta if you're having problems with Vista. Create a new file in Notepad and name it SP1Beta.cmd Past the following into SP1Beta.cmd: Code: echo off reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\VistaSp1 /v Beta1 /t REG_SZ /d a2c3c14a-9586-4d37-9aaa-79fbd64069d2 /f reg add HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\WindowsUpdate\VistaSP1 /v Beta1 /t REG_SZ /d a2c3c14a-9586-4d37-9aaa-79fbd64069d2 /f echo Vista SP1 registry key has been set. Please check for updates in Windows Update. Right-click this file. Run this file as administrator. This is the same code members of the beta program have in their registry. Check for Windows Updates. You will be prompted to download 3 updates before SP1 appears in WindowsUpdate. If it does not appear after downloading these 3 updates run the SP1Beta.cmd again and then check again. This will work for x32 and x64. WARNING: This is a legit way to download Vista SP1 beta but it is not a SAFE way because this is still a closed beta. The SP1 beta may be unstable and is not meant to be downloaded by the public YET.