Disable password complexity Hyper-V 2008 R2

Disabling password complexity requirements on Hyper-V Server 2008 R2

Other useful things to investigate:

Type net accounts at a command prompt on the Hyper-V terminal will display current password policy settings.

I use net accounts /maxpwage:unlimited to prevent my password expiring in my test environment … just out of pure laziness.

Net Accounts

Updates the user accounts database and modifies password and logon requirements for all accounts.

http://technet.microsoft.com/en-us/library/bb490698.aspx