I would like to get an overview of the files that are updated in specific Windows Updates.

The reason behind this is that we had problems after the latest Windows 7 updates. I wonder which of these updates caused the file MSCOMDLG.OCX to be overwritten with a new version with a different COM version number, and I wonder if the same file will be updated on Windows XP machines.

So: can I find a list of all files that are updated, per Windows Update package?

  • Sometimes they list them sometimes not, google search the KB-xxxxxx number.
    – Moab
    Aug 21, 2012 at 15:17
  • I don't know which one caused the update. Aug 28, 2012 at 21:24
  • Neither do I???
    – Moab
    Aug 28, 2012 at 23:48

1 Answer 1


If you are running your own WSUS server in a corporate environment, you should be able to download the updates and view the update files on the server. The update files are downloaded as a repository and you can choose when to push them (or whether to push them).

If WSUS itself doesn't provide a way for you to view the changes, you can open any .cab or .msi files in the update repository using various CAB extraction tools (hint, hint) and view the files within.

The easiest way to do this in my opinion is to have an "integration" environment where you deploy planned updates to a standard workstation image and see what impact they have on the filesystem and test out programs that your organization uses. This can either be on a spare workstation or in a virtual machine on someone's box.

During the update, you can run a tool like SysInternals Process Explorer to view which files are being written to, and just set up a filter that filters out things you don't care about like file reads and registry accesses.

Sorry if this isn't a direct answer, but I am not extremely familiar with running a WSUS server.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.