An anonymous reader writesReader jones_supa writes, though, that the most recent patch rollout came with a bug of its own, since corrected: the company apparently botched a rollup update for Visual Studio 2010 Tools for Office Runtime : "There is an issue with KB3001652 : many users are reporting that it is locking up their machines while trying to install it. It does not seem that this patch is doing any other damage though, such as bricking the operating system. These days Microsoft appears to be reacting quickly to this kind of news as it looks like the patch has already been pulled from Windows Update."