Did Windows Updates break our web application?

[MMock]

We are getting this error today:

Retrieving the COM class factory for component with CLSID ... failed due to the following error:...

in a live site, that has been working fine on a daily basis. Could last night's Windows updates have broken it and what do we do?

Oh, and also The .Net Framework Data Providers require Microsoft Data Access Components(MDAC). Please install Microsoft Data Access Components(MDAC) version 2.6 or later

This happens during uploads of an excel file to our database.

[MMock]

Oh, it wasn't because of the udpates. They weren't pushed out yet, I just found out. And a reboot fixed it. But this isn't a good thing to happen to a live site. Any ideas why it did?

[Pradeep1210]

If you are sure that nothing else has changed on the system, and you suspect that it could be the windows update that broke it, try following these steps:

1. Restore your system back to a previous date using System Restore.
2. Set Windows Update to just notify you of updates instead of automatically updating.
3. Now when the Windows update notifies you of the update availability, you can inspect and be sure that this was the update that broke your application.