problem not solved

open a command prompt as administrator and type or copy/paste this:

disable lua (break metro apps in windows 8/8.1)

%windir%\System32\reg.exe ADD HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f

disable admin prompt

%windir%\System32\reg.exe ADD HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v ConsentPromptBehaviorAdmin /t REG_DWORD /d 0 /f

disable dep

bcdedit.exe /set {current} nx AlwaysOff



if you want revert to default settings use this:

enable lua

%windir%\System32\reg.exe ADD HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 1 /f

enable admin prompt

%windir%\System32\reg.exe ADD HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v ConsentPromptBehaviorAdmin /t REG_DWORD /d 2 /f

enable dep

bcdedit.exe /set {current} nx AlwaysOn



after this you have full admin rights in your system and cf work without problems