There are no specific error messages, just a statement that a problem with my computer is stopping the install.
I can manually install some; some say 'not a valid Win32 App' and the security update for IE8 tells me
that it is not appropriate for my version of IE, which is IE8 anyway.
I have run SFC, chkdsk, full Avast antivirus scan, full SuperAntiSpyware scan, replaced the SD folder, deleted
the CatRoot2 folder, re-registered the .dlls, used the Microsoft 'Fixit' program, in fact I believe I have
done everything I have ever read about in MS articles, this forum and links referred to here.
I had not done anything or installed new software before the problem arose.
The only error I can find is in the WindowsUpdate.log file, as follows:
'Service WARNING: GetUserTokenFromSessionId failed with error 800704dd for session 0' (seems to be linked to Error: 0x80240020)
I've Googled this, and read this article:
The only thing I haven't previously tried is creating the entries, by reference to that article in:
HKLM\Software\Microsoft\WindowsNT\Current Version\Winlogon\Notify\Senslogn -
which is currently empty.
So, having backed up the registry with ERUNT, double clicking on my newly created .reg file produces the following:
"Not all data was successfully written to the Registry. Some keys are open by the system or other processes."
(In fact, no data is written.)
Attempting manual editing produces:
"Cannot create value - error writing to the registry"
Same situation exists if safe mode is used.
System Restore is not appropriate, as I only maintain recent points.
Possible Rootkit? Perhaps it's time to reinstall (for the first time) on this 7 year old computer.
Dell Dimension 4600, Pentium 4, XP Home, SP3, 2.5GB RAM, HDD 80GB, 75% unused.
Edited by petewills , 12 May 2011 - 12:33 PM.