I keep getting the "NTVDM CPU has encountered and illegal instruction" every time windows update tries to run (wuauclt.exe) and updates won't install. This started after the new Windows UPdate Agent was installed around 6/14. All updates have failed since then, I just get the popup errors. I ran several scans with Malwarebytes, Spybot, AVG and nothing was found. I ran the Fixit tool from MS and it indicated that there was a problem with windows update agent and the problem was fixed, but it still doesn't work. I'd love to reinstall windows update agent, but windows won't let me. Even the \wuforce command won't force a reinstall. Does anyone have any ideas?