This is a known issue,check these links out,HERE and HERE
Tom
I successfully dnld'd and installed 2 of 3 of the July updates.
I have updates to MS .Net Framework 1.1, 2 updates May issue.
Update KB928365 for MS .Net Framework 2.0.
MS .Net Framework 1.1 update dnld's but fails to install KB928366.
OS: Windows XP Home SP2
Mem: 1024mb
CPU: 2.93mhz
HDA: 89.4gb NTFS free space
I have made several attempts to dnld & install KB928366, each attempt followed by a restart.
Error Code: 0X643 provides me no useful info.
MS KBase ,FAQ, etc fail me also.
Any suggestions?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic