REGEDIT4

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\AdvancedOptions\BROWSE\PROXYCACHE]
"CheckedValue"=dword:00000001
"DefaultValue"=dword:00000000
"HelpID"="iexplore.hlp#00000"
"HKeyRoot"=dword:80000001
"RegPath"="Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings"
"Text"="Automatic proxy caching by host"
"Type"="checkbox"
"UncheckedValue"=dword:00000000
"ValueName"="EnableAutoProxyResultCache"