I used the update retriever to retriever the updates. It found 75 msu and 1 cab files (KB958488). I copied the cab file to a folder and started downloading all the 75 msu updates to the same folder. After sometime all 75 updates were downloaded and went green but when i checked the download folder, there were only 68 msu files even though the retriever shows all 75 msu's as green/downloaded. Can anybody explain this? Then when i integrated all the 68 msu + 1 cab, 5 msu's of internet explorer updates went red (failed to integrate). If i cant integrate IE updates then is there any addon or silent install available? I checked the complete list of addons, its not there. Another thing is that when i checked number of installed updates on my system (Windows Update > View Update History > Installed Updates) i found out there were 123 updates in total, out of which 81 updates were under the category - Microsoft Windows. Why did the Update Retriever showed only 75 updates then?