The proverbial “free ride” is about to come to an end for pre-release copies of Microsoft’s latest iteration of the Windows client. Early adopters still running Windows 7 Build 7100
need to upgrade to the RTM Build 7600 version of the platform as soon as possible. This because Windows 7 RC Build 6.1.7100.0.090421-1700 is only one month away from its expiration deadline.
Just as it is the case for a variety of Microsoft testing development releases, Windows 7 RC Build 7100.0.090421-1700 is time-bombed and will enter its expiration period at the start of the coming month. By mid-2010, Windows 7 RC will be completely expired and will be treated in the same manner as a pirated copies of the operating system, offering customers experiences similar to platform versions that have been detected as non-genuine by the Windows Genuine Advantage antipiracy mechanism, according to Brandon LeBlanc, Windows Communications manager on the Windows Client Communications Team.
Full read here: Windows 7 Expiration Around the Corner for Build 7100 - Starting on March 1st - Softpedia