For users whose computers are not always on and connected, or users who utilize the sleep and resume functions on their laptops, these updates can often be missed, since the system typically updates between midnight and 6 a.m.If you have missed many updates, MSE will be very slow when it does get a chance to update because it has to check your virus and spyware definitions against the most current definitions and then update your system accordingly.After that, Leo advises going to ESET and run their free online scanner.
Also, I had to remove the "read-only" attribute from the Program Data and Users folders, add the SYSTEM group there too and give them full control.
Only then will the MSI install work and even then, it says I doesn't have the rights to create a shortcut on the desktop.
I'm running a 64bit version of Windows 7 on a computer that's a few years old.
I recently installed malwarebytes, and found a few trojans and a good bit of adware. I quarantined the viruses, but just now my computer has been acting absurdly laggy, taking about 10 seconds to allow me to type anything into Firefox.
In right-side pane, look for a DWORD Disable Windows Update Access.