Optima Company PC Automatic Logon to Windows NT, Disabling AutoLogon Bypassing AutoLogon

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9. Automatic Logon to Windows NT

Since the Model DSB2 OPtima PC has no built-in keyboard functions, it is shipped from the factory with the Windows NT AutoLogon feature enabled. This has been accomplished by setting a username and password (under Start/Programs/Ad- ministrative Tools/User Manager) and matching that password with the DefaultPassword in the system registry (see below). For shipment the powerup user is “Administrator” and the DefaultPassword is “password.”

9.1 Disabling AutoLogon

Note that for the DSB2, if autologon is to be disabled a keyboard will be required (for the CTL-ALT-DEL poweron sequence and to enter a user name and pass- word). To disable the autologon function, enter a “0” (zero) for AutoAdminLogon (using the registry editor as described below).

9.2 Bypassing AutoLogon

To bypass the autologon process (and logon as a different user), hold down the

SHIFT key after a logoff or after a Windows NT restart.

9.3 Changing the Username and Password

Go to the User Manager (under Start/Programs/Administrative Tools) and add a user name and password. Then go to the registry editor (as described below). Enter that user name and password as the DefaultUserName and DefaultPassword, respectively. Set the AutoAdminLogon to 1 and save the changes. Now the system will logon automatically using the new user name and password.

9.4 Using the Registry Editor

Caution: Using the Registry Editor incorrectly can cause serious, system-wide problems that may require you to reinstall Windows NT in order to correct them. Any problems that result may not be able to be resolved. USE THIS TOOL AT YOUR OWN RISK.

Note that the entries described here have already been made for the DSB2.

1.Go to Start/Run. Type in REGEDT32.EXE and click OK.

2.Find HKEY_LOCALMACHINE\SOFTWARE\Microsoft\Windows NT\Current Version\Winlogon.

3.From the Edit menu, choose Add Value. In the value name field, type “AutoAdminLogon” (without the quotes). Set the data type to REG_SZ and click OK. Enter a 1 in the string field for the new value name. Save the changes.

4.The following values should be assigned:

DefaultDomain Name

DefaultUserName

DefaultPassword

These values should be set to the values you would use when logging on.

5.If the DefaultPassword does not exist, one must be created. From the Edit menu, choose Add Value. In the value name field, type “DefaultPassword” (with- out the quotes). Set the data type to REG_SZ and click OK. Set the password to that of the user shown in the DefaultUserName. Save the changes.

Note that a default password must be provided. If the DefaultPassword is left blank, AutoAdminLogon will be set to zero when NT powers up (and autologon will not occur).

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Contents Contents FiguresIntroduction InstallationWiring CE EMC ComplianceModel DSA2 Dimensions for Flange Mount 550 450 Model DSB2 and11.640 the Remote I/O Station External Floppy Drive Adding Boards Installing the Modbus Plus SA85 BoardAdding Hardware 1660-IN-010-0-04 Peripheral Devices Bios Password SettingsAdding Memory Operating SystemDate/Time Zone Setup Windows NT Setup 5.1.1 Window SettingsRegional Settings for Date FontsBackups Installing the Wonderware LicensePower Shutdown/Battery Backed Power Supply DisplayNumeric Keyboard Keyboard Functionality Model DSA2 onlyFunction Keys Left/Right Mouse Buttons Environmental SpecificationsSpecial Cases Cursor KeysAutomatic Logon to Windows NT Changing the Username and PasswordUsing the Registry Editor Disabling AutoLogon Bypassing AutoLogonTroubleshooting/Application Tips Front keypad or touchscreen stops workingDisconnecting the Display End User License AgreementDescription of Other Rights and Limitations Upgrades and Recovery Media 1660-IN-010-0-04 An Invensys Company