When upgrade from Windows 98 to Windows XP SP3, the setup complains cannot copy "mfc42.dll" then stop. This issue is from a bug of setup files of XP SP3. This video shows how to fix it by changing 4 installation files and setup from local disk. <br />00:00 Demo the error that stops the upgrade.<br />01:00 Detailed steps of the fixing. <br />05:57 After fixing, installation and verification of the upgrade.<br />...<br /><a href="https://www.youtube.com/watch?v=l6B4lnUVAgA" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=l6B4lnUVAgA</a>