Siemens SINUMERIK 840DE sl Commissioning Manual page 1538

Backing up and restoring data
4.12 Operating a service PC/PC in the network
4.12.6 Release drives C: and D: of the PCU 50.5 in the network for administrator
accounts
You can release local drives (C$, D$) of the PCU 50.5 in the network for administrator
accounts
You can then access these PCU 50.5 drives, for example from a PG/PC in the network if you
use an administrator user account that is available on the PCU 50.5.
Procedure
1. Enter "regedit" in the search field of the registry.
The registration editor opens.
2. Navigate to the following folder in the folder structure:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Syst
em
3. Right-click in the working area and select the "New > DWORD (32-bit) Value" command
in the shortcut menu.
4. In the "Name" field, enter the "LocalAccountTokenFilterPolicy" designation.
5. Double-click the key and enter "1" as "Value".
6. Confirm the input, close the registration editor and restart the PCU 50.5.
Result
The registry entry has been added and the drives are available in the network after the
restart.
However, you cannot change the access rights, i.e. access is only possible via an
administrator account that is known on the PCU 50.5.
To undo the release, delete the created key in the registration editor.
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Commissioning Manual, 02/2014, 6FC5397-1DP40-4BA0
PCU-Basesoftware (IM8)