When installing active directory on a Windows 2008 R2 server the error message:
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Active Directory Domain Services Installation Wizard
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The local Administrator account becomes the domain Administrator account when you create a new domain. The new domain cannot be created because the local Administrator account password does not meet requirements.
Currently, a password is not required for the local Administrator account. We recommend that you use the net user command-line tool with the /passwordreq:yes option to require a password for this account before you create the new domain; otherwise, a password will not be required for the domain Administrator account.
At a command prompt run:
net user administrator /passwordreq:yes
