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An unauthorized change ... Error code 0x80070426 RRS feed

  • Question

  • Hello,

    After restarting after a Windows Update, the screen was white with a message saying "An unauthorized change has been made to Windows."  Windows Genuine Advantage failed to validate the system, giving the error code 0x80070426.  I read the answer to a similar question which recommended uninstalling/installing the update 'KB925902', but this update is not present on the system. 

    Error code: 0x80070426



    Diagnostic Report (1.7.0066.0):
    -----------------------------------------
    WGA Data-->
    Validation Status: Invalid License
    Validation Code: 50
    Online Validation Code: 0x80070426
    Cached Validation Code: N/A, hr = 0x80070426
    Windows Product Key: *****-*****-F4GJK-KG77H-B9HD2
    Windows Product Key Hash: iJAth4TbScMi8HdcPurlASXdEkw=
    Windows Product ID: 89578-OEM-7332157-00204
    Windows Product ID Type: 2
    Windows License Type: OEM SLP
    Windows OS version: 6.0.6000.2.00010300.0.0.003
    CSVLK Server: N/A
    CSVLK PID: N/A
    ID: {F6C83426-A9EB-4C71-A72D-1FF067873D71}(1)
    Is Admin: Yes
    TestCab: 0x0
    WGA Version: Registered, 1.7.59.1
    Signed By: Microsoft
    Product Name: Windows Vista (TM) Home Premium
    Architecture: 0x00000000
    Build lab: 6000.vista_gdr.071009-1548
    TTS Error: M:20080109145227260-
    Validation Diagnostic:
    Resolution Status: N/A

    Notifications Data-->
    Cached Result: N/A
    File Exists: No
    Version: N/A, hr = 0x80070002
    WgaTray.exe Signed By: N/A, hr = 0x80070002
    WgaLogon.dll Signed By: N/A, hr = 0x80070002

    OGA Data-->
    Office Status: 100 Genuine
    OGA Version: Registered, 1.6.21.0
    Signed By: Microsoft
    Office Diagnostics: 025D1FF3-282-80041010_025D1FF3-170-80041010_025D1FF3-171-1_025D1FF3-434-80040154_025D1FF3-178-80040154_025D1FF3-179-2_025D1FF3-185-80070002_025D1FF3-199-3

    Browser Data-->
    Proxy settings: N/A
    User Agent: Mozilla/4.0 (compatible; MSIE 7.0; Win32)
    Default Browser: C:\Program Files\Internet Explorer\iexplore.exe
    Download signed ActiveX controls: Prompt
    Download unsigned ActiveX controls: Disabled
    Run ActiveX controls and plug-ins: Allowed
    Initialize and script ActiveX controls not marked as safe: Disabled
    Allow scripting of Internet Explorer Webbrowser control: Disabled
    Active scripting: Allowed
    Script ActiveX controls marked as safe for scripting: Allowed

    File Scan Data-->
    File Mismatch: C:\Windows\system32\user32.dll[6.0.6000.16438]

    Other data-->
    Office Details: <GenuineResults><MachineData><UGUID>{F6C83426-A9EB-4C71-A72D-1FF067873D71}</UGUID><Version>1.7.0066.0</Version><OS>6.0.6000.2.00010300.0.0.003</OS><Architecture>x32</Architecture><PKey>*****-*****-*****-*****-B9HD2</PKey><PID>89578-OEM-7332157-00204</PID><PIDType>2</PIDType><SID>S-1-5-21-2454438755-3276860549-1401853945</SID><SYSTEM><Manufacturer>Dell Inc.</Manufacturer><Model>MM061                           </Model></SYSTEM><BIOS><Manufacturer>Dell Inc.</Manufacturer><Version>A14</Version><SMBIOSVersion major="2" minor="4"/><Date>20070402000000.000000+000</Date></BIOS><HWID>72333507018400FA</HWID><UserLCID>0409</UserLCID><SystemLCID>0409</SystemLCID><TimeZone>Pacific Standard Time(GMT-08:00)</TimeZone><iJoin>0</iJoin><SBID><stat>3</stat><msppid></msppid><name></name><model></model></SBID><OEM><OEMID>DELL  </OEMID><OEMTableID>M07    </OEMTableID></OEM><BRT/></MachineData><Software><Office><Result>100</Result><Products><Product GUID="{91120000-002F-0000-0000-0000000FF1CE}"><LegitResult>100</LegitResult><Name>Microsoft Office Home and Student 2007</Name><Ver>12</Ver><Val>47CF8A5A0DD3F0E</Val><Hash>U6nrLLlTP5Zsc7MYv0G1324Ez+o=</Hash><Pid>81602-903-5845715-68089</Pid><PidType>1</PidType></Product></Products></Office></Software></GenuineResults>

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    Wednesday, January 9, 2008 11:40 PM

Answers

  • Hello damaztar,

     

    Vista is in what is called a 'Mod-Auth' Tamper state.  There are 2 types of Mod-Auth tampers.

     

    1) A critical system file was modified On Disk - What this means is that the file, located on the hard drive, was modified in some way. This can be caused by random file corruption, a malicious program (spyware, malware, virus) or by manual file modification (by a user of the system). There is also a very small chance that an Update may fail in mid-update and cause this type of issue. As a safety mechanism, Updates are made so that if they fail, they roll back any updating that was done before the failure, but there is an off-chance that the roll back did not occure.

     

    2) A critical system file was modified In Memory - What this means is the file itself (on the hard drive) is un-modified, but the code, from that file, running in the system, was modified in some way. and is usually caused by a running program that is incompatible with Vista.

     

    Because of the Mismatched files listed under the "File Scan Data-->" line of your Diagnostic Report, I beleive your issue is a On Disk Mod-Auth

     

    So, what I would like to do is exclude a failed update as the cause of your issue. To do that, I would like you to uninstall/reinstall the update that correspond with mismatched critical system file seen in your Diagnostic Report under the "File Scan Data-->" line. (i.e. user32.dll[6.0.6000.16438]) by following the below steps:

     

    First, uninstall the updates:

     

    1) Log into Vista in Safe Mode

    2) Click 'Start' button, then Click 'Control Panel'.

    3) Click 'Classic View' in the upper right of the Control Panel window.

    4) Double-Click the icon named 'Programs and Features'.

    5) Click the 'View installed updates' link in the upper right of the Program and Features window.

    6) It may take some time for the list of Updates to appear, please wait.

    7) Right-Click on the update 'KB925902' and select 'Unistall'.

    8) Reboot into Normal Mode

     

    Now, reinstall the updates:

    (At this point, Vista may or may not be in reduced functionality, the below steps assume that Vista is in reduced functionality)

     

    9) Log in to Vista and select the options that brings up the Internet Browser.

    10) Go to http://www.microsoft.com/downloads

    11) Search for KB925902

    12) In the search results, click the update that has "KB925902" in the name.

    13) Click the 'Download' button.

    14) You will be given the choice to Save or Run, select Run

    15) Reboot 2 times.

     

    If no KB925902 Update was installed on your computer, I suggest running a Anti-Spyware/Malware and Anti-Virus program to see if this issue was maybe caused by a malicious program modifing the file.

     

     And lastly, if none of these suggestions resolves your issue, open a (no cost) support request at http://go.microsoft.com/fwlink/?linkid=52029 for additional assistance.

     

     

    Thank you,

    Darin Smith

    WGA Forum Manager

    Wednesday, January 9, 2008 11:51 PM