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User and Remote Interface Security Measures
USB Interfaces
As shown in Figure 8-1 above, the default Windows XP (post-SP2) value for this entry is 0x91 (under the
entry HKCU\...\NoDriveTypeAutoRun). This setting disables AutoRun for Unknown and Network
drives, but enables AutoRun for Removable, Fixed, CD/DVD or RAM drives.
You can disable AutoRun for all drive types by changing the value to 0xFF, as described in the following
section.
Disable & Enable Procedure
In view of the interaction between the per-machine and per-user Registry settings, as described above, it is
recommended that, if both keys exist in your instrument’s Registry, you should alter the settings of both
Registry keys to the same value at the same time.
Use the following procedure to disable AutoRun for all drive types, or to revert all AutoRun settings to their
Windows XP default values.
1. Open the Windows Registry editor:
Select Run... from the Windows Start menu. Then, type regedit into the Windows Run dialog box, as
shown in Figure 8-2 below, and click OK.
Figure 8-2 Windows XP Run Dialog
2. The Registry Editor window appears. Using the tree view control on the left of the window, navigate to the
per-machine (HKLM) key:
HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer.
3. To disable AutoRun for all drive types, set the value of entry NoDriveTypeAutoRun to 0xff.
To revert AutoRun settings to the Windows default values, set the value of entry
NoDriveTypeAutoRun to 0x91.
4. Again using the tree view control on the left of the Registry Editor window, navigate to the per-user
(HKCU) key: HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer.
5. To disable AutoRun for all drive types, set the value of entry NoDriveTypeAutoRun to 0xff.
To revert AutoRun settings to the Windows default values, set the value of entry
NoDriveTypeAutoRun to 0x91.
6. From the Registry Editor menu, select File > Exit to save the settings and exit the editor.
7. Shut down and restart the instrument, to enable the new settings to take effect.
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