Download the latest migration command tool.

32-bit:
http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=5015

64-bit:
http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=7013

To run the following command go to:

Start -> all programs -> Microsoft online services -> migration -> migration command shell

Method-1
For single user in Domain

Set-MSOnlineUserPasswordNeverExpire –Identity jane.doe@example.com –PasswordNeverExpire $true

Method-2
For All users in Domain

Get-Msonlineuser -Enabled | Set-MSOnlineUserPasswordNeverExpire –PasswordNeverExpire $true