Editing this part of the OS, however, can have disastrous effects if things go awry, and most users are advised to steer well clear and wait for an official fix.
To that end Microsoft has yet to give any details on how to repair the problem, although the company can be expected to provide one in due course if it continues to be an issue.
Neither magicandre1981 nor Moab's answers assisted me.
After following both procedures (on a virtualbox I reset back to the same snapshot) I still had the hung update search. I have no idea what update got everything sorted out but using this sledge hammer I was able to get a bunch downloaded and installed.
After installation of all updates you should now have a working Windows Update session.