HOWTO: Disable complex password policy on Hyper-V Server 2008?

How do you disable the password complexity requirements on a Microsoft Hyper-V Server 2008 R2?

Keep in mind that when you log into the server, the only UI you have is:

And you cannot run gpedit.msc:

C:\Users\Administrator>gpedit.msc
'gpedit.msc' is not recognized as an internal or external command, 
operable program or batch file.

because there are no .msc snap-ins installed with Microsoft Hyper-V Server 2008 R2.

The problem comes when you're trying to add an account to the server, so you can manage it, but it doesn't like most passwords:

And, predictably, typing

NET HELPMSG 2245

gives you

The password does not meet the password policy requirements. Check the minimum p
assword length, password complexity and password history requirements.

i hoped it would have been a friendly user experience, and either:

• offered to disable the password policy
• tell me how to disable the password policy
• tell me how to check the minimum password length, password complexity and password history requirements.

Password Complexity Requirements

The Microsoft's default password complexity for Server Core is:

• Passwords cannot contain the user’s account name or parts of the user’s full name that exceed two consecutive characters.
• Passwords must be at least six characters in length.

• Passwords must contain characters from three of the following four categories:

  1.English uppercase characters (A through Z).

  2.English lowercase characters (a through z).

  3.Base 10 digits (0 through 9).

  4.Non-alphabetic characters (for example, !, $, #, %).

External links

• Technet Forums: Hyper-V Server disable complex passwords
• Technet: Passwords must meet complexity requirements of the installed password filter

Update: 2k views? So many people keep coming coming to it: up-vote it!

You can export security settings with:

secedit /export /cfg X:\new.cfg

Then you edit new.cfg (it is ini format) and change line "PasswordComplexity = 1" to "PasswordComplexity = 0". Apply it on Hyper-V server with:

secedit /configure /db C:\Windows\security\new.sdb /cfg X:\new.cfg /areas SECURITYPOLICY

You can find more details in this blog post.