A third possibility came to light recently with the introduction of the Windows Update Catalog. Like the Windows Updates website the Windows Update Catalog only loads properly in Internet Explorer. It does offer however a nice and convenient way of downloading all updates for Windows in one go from the official Microsoft server.

The website features a search form that searches the entire Windows database of patches, updates and applications. Entering a generic name like Windows XP returns more than 1000 results which means that it makes sense to reduce the results by narrowing down the search.

Instead of searching for Windows XP a user could search for Windows XP Security Updates or Windows XP KB. Items can be added to the basket from where they can be downloaded at once. The updates will be stored in a selected folder from where they can be installed.

The Windows Update Catalog offers an enhancement by introducing the basket which makes it possible to add all files to it before downloading them in one go. This is a great way of downloading all updates for Windows in short time.

It is missing a few features like filtering search results by operating system or language which would greatly reduce the hits and time spent on the site.

Update: The website is more for the professional user who know exactly what they are looking for. The easiest way to work your way through the site is to know the unique patch numbers to display them directly and without noise in the interface.