or other error messages?
Since these are all related to .Net Framework updates, have a look at Microsoft's advice in the link below and try their fix;
If their FixIt doesn't solve the issues try their manual steps in that page.
I hope that helps.
Windows xp sp3, all updates current. Running .net 3.5 family. Three KB's, 2518864,2572073 & 2633880 seem to install properly but then windows update requests them to be installed again, and again. Looked in add and remove to see if I could uninstall from there and try again, but they were not listed. Rebooted after each install even though it did not request to be rebooted. Maybe their not being installed in the correct place, but I don't know where that is or how to tell windows where to install them.
Thanks in advance for any suggestions,