Post date: Jul 14, 2014 3:15:15 PM
If a user account is Blocked from Signing In to Office365 in a Hybrid configuration you need to modify an attribute on the synced user accounts in Windows Azure AD connector.
To unblock the user by using Windows Azure Active Directory Module for Windows PowerShell, you can follow these steps:
1.Click Start, click All Programs, click Windows Azure Active Directory, and then click Windows Azure Active Directory Module for Windows PowerShell.
2.Type the following commands, and press Enter after you type each command:
$creds = Get-Credential
Connect-MsolService –Credential $creds
Set-MsolUser -UserPrincipalName <user@contoso.com> -blockcredential $False
Please Note: The <user@contoso.com> placeholder represents the sign-in address of the user.