>>>Less then a month ago, the IT department gave me a newly formatted computer with Windows 7 installed. Over the last weekend, the machine decided that the version of windows OS is not genuine. Has anyone else experianced this, and what causes it, and how to fix it.
>>>
>>>This has happened on a older machine, and my machine at home. Research on the web has proved nothing that resolves the issue. I have tried to re-register it, but the tool does not launch because the OS is not genuine.
>>
>>The way to fix it is to hand it back to the IT department and have them fix their installation.
>
>I have contacted them, but it is still early in the day.
>
>I am thinking that either they did not properlyt activate the copy of windows, or a third party application (Dropbox or Teamviewer) is interferring somehow.

One cause of this is the computer supplier improperly using a corporate Volume License Key to activate Windows, rather than using OEM or full licenses: http://en.wikipedia.org/wiki/Volume_license_key#Unauthorized_use