I am updating a whole bunch of server which are running Windows 2008R2 SP1. There are about 120 updates to install. I found that if I run all of the updates, it takes hours and hours, then fails and takes hours and hours backing things out.
I started doing updates in small batches. The same updates which earlier failed, worked. But then sometimes the small batches (5-10) error... but if I run the updates one by one, then they work.
The error code is 80070643. I could post the windowsupdate.log but I did not see anything else in there that was helpful.
MS has a KB on this ( http://support.microsoft.com/kb/976982 ) but I tried doing what they suggests... at first seemed like it was going to solve it, but then I still ran into the same error again and again and again.
Is everyone running into this? Surely others install new servers, whack on Windows and then do updates.
My updates come from my local WSUS server but I don't think that matters - I was getting similar trouble doing it from MS server directly.