Today the first service pack of Windows 7 were made available for download to subscribers of MSDN and TechNet. Later this month - the expected date is Feb 22 – the download links will be made public for all and sundry. Of course, download links for the RTM and prior builds of the service pack has been floating around the web for weeks. But before you go about installing SP1, you should read a Knowledge Base article that Microsoft published not too long ago.
According to KB2492938, installation of Service Pack 1 of Windows 7 or Windows Server 2008 R2 can negatively impact a select list of programs causing them to lose functionality or stop working altogether.
Microsoft has provided examples of a few programs that have been reported to experience a loss of functionality when they are installed on a computer that is running Windows 7 SP1 or Windows Server 2008 R2 SP1. These include IncrediMail Xe version 2.0, Lenovo System Update and Ninja Trader 7.0, 6.5 that stops working, and programs AlibreDesignExpress version 9.2 and Ideazon Z Engine version 126.96.36.199 suffers major to minor loss of functionality.
Microsoft has warned that the list should not be considered complete.
If a program that is not mentioned in this list fails to work as expected, the KB article instructs users to restart their computer – the old wives remedy equivalent of tech support – meaning, that Microsoft has currently no solution to the problem.