I have a laptop running Windows 7 32-bit.
Last nights security updates caused my logitech mouse to stop working (specifically, it caused several USB ports to stop altogether). After reviewing the system event log I found that the IPBusEnum component was failing due to an activation security error.
A little more research and I found that this was caused by the TrustedInstaller replacing the security permissions on those keys and generally mucking them up. To fix this I had to open regedit, take ownership of ALL the keys related to IPBusEnum and force it to use the inherited permissions from the tree.
Is there a better way to fix this when MS screws up the updates? I would hate to have to walk around to a number of machines and manually fix the registry key security settings.