Microsoft has now pulled an update it released earlier today for Visual Studio 2010 Tools for Office Runtime. This was done after a number of online reports stated that the update was causing many Windows PCs to freeze after it attempted to install a patch.
The update, KB 3001652. was supposed to be a rollup of a number of previous fixes for Visual Studio 2010 into one big file. It was offered along with a number of other patches from Microsoft as part of the monthly "Patch Tuesday" event. However, for some reason, the patch kept installing but never finished on many PCs. Microsoft quickly took the patch out of its Automatic Update circulation, which means that if you haven't downloaded it yet you don't have to worry about it.