Thanks, that certainly makes the uninstall easier. But I still want to know if this is the usual procedure. Does Microsoft leave it to users to always be on the lookout for bad updates, and fix the problems themselves? It's luck that I know about this one. If I hadn't found out it, would Microsoft have released an automatic fix through Windows Update, or would I have just been left with 6 permanently corrupted Windows installs?
I know, but the frequency of bad updates doesn't bother me. I want to know how Microsoft deals with its blunders, so that I know how to deal with updates in future. And anyway, if Microsoft expect users to fix their mistakes, as it has been implied so far, it wouldn't matter whether this happened once a month or once a year. I would have to watch out for bad updates once a month, every month, to make sure there wasn't a bad update. Seems unintuitive that I, an average home PC user, would be expected to have to do this stuff myself, especially when "automatic download and install" is the recommended setting for Windows Update. I should add, I know this is a user-to-user forum, so I'm not getting worked up by myself. I just want to know what to expect in future.