I have xp home SP3 and my logon has Admin rights. The sequence of events is:\n\n1. Got a virus notice from my antivirus (CA Security Centre) on 10-Jul-2009.\n2. A bit later XP gave me a message that some files were damaged and asked\nme to install my XP SP3 CD. This PC came with a XP SP2 CD, hence, I inserted\nit, but XP rejected it as it was not the XP SP3 CD.\n3. I booted from my XP SP2 CD and ran the Repair existing Windows function,\nThis resulted in my PC changing from SP3 back to SP2, also IE7 changed back\nto IE6.\n4. Then I found Windows Update would not load, and got the 0x8024D007 error.\n5. Downloaded XP SP3 on another PC on my home network, copied it to the\nproblem PC, and tried to install it. However, by this method SP3 failed to\ninstall with a message about not being authorised (or something like that).\nSubsequently the partially complete SP3 installation uninstalled itself,\nfollowed by an XP message saying that Windows is damaged and may not work\nproperly.\n6. Then I remembered that one of my other PCs has XP SP3, so I booted off\nthe XP SP3 CD and ran the Repair existing Windows function. This resulted in\nmy PC changing from SP2 back to SP3 again, but I still had IE6 and I still\nreceived the Update 0x8024D007 error.\n7. Next I installed IE8, but this had no effect on the Update 0x8024D007\nerror.\n8. Next I manually downloaded the latest version of Windows Update Agent as\ndescribed in KB949104. However, at the last stage of installing the Windows\nUpdate Agent I again got the dreaded 0x8024D007 error.\n9. Next I ran the KB643144 fix, but this had no effect on the 0x8024D007\nerror.\n\nSorry that its a bit long winded, but nothing seems to fix the problem.\nPlease note that I am an electrical engineer, but I am not a computer expert.\nHence, I presently do not know how to edit the Registry directly, but I can\nlearn.\n\nAny help with this problem would be appreciated.\n\nRegards, Jongo.