When initializing a domain in Windows 7 or 10, it is not possible to select a source domain if the User Account Control in Windows 7 or 10 is set to On. To resolve the initialization problem, temporarily set the User Account Control in Windows 7 or 10 to Off.
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Before initializing a domain, in your Windows 7 or 10 Control Panel, click User Accounts.
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Click Turn User Account Control on or off.
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Clear Use User Account Control (UAC) to help protect your computer.
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Restart the computer.
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Initialize the domain.
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Turn the UAC on if needed.
Instead of turning UAC off, it is also possible to manually update the content of
the PATTERN_wat key in your Windows Registry. In the Registry Editor, the key appears in the path HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBC.INI. You need to define the correct source domain parameters in the key strings.