If you are running a volume licensed edition of Office 2010 and it needs to be activated, you may see this message when you open any Office 2010 application:
This message means Office is failing to activate against a KMS host on your network. KMS activation is the default activation type when you install a volume license edition of Office 2010. There are two ways of getting Office 2010 activated:
- Enter a MAK key and activate over the internet or phone
- Setup an Office 2010 KMS host and activate using it.
Option 1: Enter a MAK key and activate over the internet or phone
Click “Continue”, then “Install Now”.
Office will configure itself. Close any open Office 2010 applications. The next time you launch an Office application you will see a screen like this:
Go through the activation wizard. Once it is done you will be activated and should not see any of these messages again.
Option 2: Setup an Office 2010 KMS host and activate using it.
See this blog post for a very detailed guide on how to setup an Office 2010 KMS Host: http://blogs.technet.com/b/odsupport/archive/2010/06/01/office-2010-kms-installation-and-troubleshooting.aspx