Windows update cause error message "Unauthorized change was made to Windows" RRS feed

  • Question

  • In the past week and a half or so, just about every other day, after boot up my Windows Vista machine, my usb mouse would stop working.  Then when I use the old wheel mouse which plugs into the mouse port, sign on using my user id/password, it would display the error message saying something like "Unauthorized change was made to Windows..... result in limited Windows function".  Then it asked me to go online to look for the resolution, or close the window.  But it seems like the ethernet stoped working.  I have no access to the internet.  If I chose "Close Window", then I got booted out of my sign on session.  So each time, I had to use the Windows Vista install DVD to boot up the machine, select repair the machine, then have it restored to an earlier point.  It seems like I only had to restore the machine to the point before the last software update (Windows Vista update), then my usb mouse would work again, and I got access to the internet again.  So 1) how do I find out what Windows update caused my machine to act up?  Because when I restored to an earlier point, it only says Windows update.  It does not tell me which Windows update it is so I can let you know.  2) What might cause my machine to act up like that?  And how can I resolve it short of restore my machine every other day or ask it to stop accepting Windows update?  Thanks, Tuyen


    Wednesday, June 11, 2008 3:51 AM


  • Hello TTpham,


      That error message is indicative of Vista experiencing a Mod-Auth tamper issue. But there are two types of Mod-Auths and each has a different resoution. So, what I need is a Diagnostic Repost, generated while Vista is activly experiencing the issue, to enable me to provide you with the correct resolution steps.



      To generate a Diagnostic Report, download and run the Genuine Diagnostics tool at this link http://go.microsoft.com/fwlink/?linkid=52012. Click "Continue" click the Windows tab, click the "Copy" button, then paste the report into a response message in this thread.


    If you do not have access to the Start Button:


    1) Login to Vista and Click the option that brings up Internet Explorer.

    2) Type: http://go.microsoft.com/fwlink/?linkid=52012 into the browser address bar.

    3) A window will come up asking if you want to Run or Save, Select Run

    4) When the program runs, Click the Continue button, then click the Copy button.

    5) Return to this thread by Typing: http://forums.microsoft.com/Genuine/ShowPost.aspx?PostID=3469997&SiteID=25 into the browser address bar.

    6) In a reply post, Paste the Diagnostic Report.



    Thank you,

    Darin Smith

    WGA Forum Manager


    Wednesday, June 11, 2008 8:35 PM