Hi, i need to access Permissions to specification keys in registry and set owner key to specification user (in Windows 8.1) I did not succeed paths: (default owner is trustedInstaller) Code: [HKEY_CLASSES_ROOT\CLSID\{5399E694-6CE5-4D6C-8FCE-1D8870FDCBA0}] [HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{5399E694-6CE5-4D6C-8FCE-1D8870FDCBA0}] [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\MyComputer\NameSpace\{5399E694-6CE5-4D6C-8FCE-1D8870FDCBA0}] [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\MyComputer\NameSpace\{5399E694-6CE5-4D6C-8FCE-1D8870FDCBA0}] I would use this method. 1-I download subinacl.exe and copy it system32 2-I run this command (for set access Permissions: Code: takeown /F %windir%\system32\subinacl.exe >nul icacls %windir%\system32\subinacl.exe /GRANT *S-1-1-0:F >nul 3-and finaly irun this: Code: subinacl /subkeyreg HKEY_CLASSES_ROOT\CLSID\{5399E694-6CE5-4D6C-8FCE-1D8870FDCBA0} /setowner=%username% >nul subinacl /subkeyreg HKEY_CLASSES_ROOT\CLSID\{5399E694-6CE5-4D6C-8FCE-1D8870FDCBA0} /grant=%username%=F /grant=administrators=F >nul subinacl /subkeyreg HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{5399E694-6CE5-4D6C-8FCE-1D8870FDCBA0} /setowner=%username% >nul subinacl /subkeyreg HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{5399E694-6CE5-4D6C-8FCE-1D8870FDCBA0} /grant=%username%=F /grant=administrators=F >nul subinacl /subkeyreg HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\MyComputer\NameSpace\{5399E694-6CE5-4D6C-8FCE-1D8870FDCBA0} /setowner=%username% >nul subinacl /subkeyreg HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\MyComputer\NameSpace\{5399E694-6CE5-4D6C-8FCE-1D8870FDCBA0} /grant=%username%=F /grant=administrators=F >nul subinacl /subkeyreg HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\MyComputer\NameSpace\{5399E694-6CE5-4D6C-8FCE-1D8870FDCBA0} /setowner=%username% >nul subinacl /subkeyreg HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\MyComputer\NameSpace\{5399E694-6CE5-4D6C-8FCE-1D8870FDCBA0} /grant=%username%=F /grant=administrators=F >nul not effected only for this path : [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\MyComputer\NameSpace\{5399E694-6CE5-4D6C-8FCE-1D8870FDCBA0}]