A while after installing a new copy of Vista or Windows 7, I usually want to be able to access the administrative shares (like C$, Admin$, IPC$, etc).
On Windows 7 and Vista, those are by default not enabled.
To enable them, import this .reg file into the registry:
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System] "LocalAccountTokenFilterPolicy"=dword:00000001
You need to reboot your system once after this registry change.
–jeroen
via How to access Administrative Shares on Vista C$ | PaulSpoerry.com.
