I do not know much about deciphering logs, but I know how to get help. You might try a system restore to prior to Windows update attempted install of MSE 2. You can also set up a case with MS here at no charge: https://support.microsoft.com/oas/default.aspx?gprid=6527&st=1&wfxredirect=1 There is also this: For home users, no-charge support is available by calling 1-866-PCSAFETY (1-866-727-2338; and/or 1-866-234-6020 and/or 1-800-936-5700) in the United States and in Canada or by contacting your local Microsoft subsidiary. There is no-charge for support calls that are associated with security updates. When you call, clearly state that your problem is related to a Security Update and cite the update's KB number (e.g., KB982312; KB2092914).