I had trouble installing a Windows Update, so I installed it manually. Since then, Windows 2012 keeps asking me to install the Windows Update that is already installed.
To fix this I just hid the Windows Update in question, but I’ve heard of others fixing the issue by uninstalling the update, then using Windows Update to reinstall it.
I can’t help feeling like there’s probably some clever way of dealing with this like deleting the distribution cache for Windows Update or something.