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An unauthorized change was made to Windows

Question
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I received "An unauthorized change was made to Windows" after a windows update yesterday and I now receive this message after bootup. My computer now fails validation. Control Panel will not appear.
Diagnostic Report (1.7.0066.0):
-----------------------------------------
WGA Data-->
Validation Status: Invalid License
Validation Code: 50
Online Validation Code: 0xc004d401
Cached Validation Code: N/A, hr = 0xc004d401
Windows Product Key: *****-*****-683GH-D8TY7-MGGGY
Windows Product Key Hash: O+rv5wrQ0pqXo1mRUvQ2J+zs87g=
Windows Product ID: 89572-011-0603964-71081
Windows Product ID Type: 5
Windows License Type: Retail
Windows OS version: 6.0.6000.2.00010300.0.0.002
CSVLK Server: N/A
CSVLK PID: N/A
ID: {2B880BAB-2576-40AB-93D9-5400968E780A}(1)
Is Admin: Yes
TestCab: 0x0
WGA Version: Registered, 1.7.59.1
Signed By: Microsoft
Product Name: Windows Vista (TM) Home Basic
Architecture: 0x00000000
Build lab: 6000.vista_gdr.071009-1548
TTS Error: M:20080125020922322-
Validation Diagnostic:
Resolution Status: N/ANotifications Data-->
Cached Result: 0
File Exists: Yes
Version: 1.5.540.0
WgaTray.exe Signed By: Microsoft
WgaLogon.dll Signed By: MicrosoftOGA Data-->
Office Status: 100 Genuine
OGA Version: Registered, 1.6.20.0
Signed By: Microsoft
Office Diagnostics: B4D0AA8B-531-645_025D1FF3-282-80041010_025D1FF3-170-80041010_025D1FF3-171-1_025D1FF3-434-80040154_025D1FF3-178-80040154_025D1FF3-179-2_025D1FF3-185-80070002_025D1FF3-199-3Browser 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: AllowedFile Scan Data-->
Other data-->
Office Details: <GenuineResults><MachineData><UGUID>{2B880BAB-2576-40AB-93D9-5400968E780A}</UGUID><Version>1.7.0066.0</Version><OS>6.0.6000.2.00010300.0.0.002</OS><Architecture>x32</Architecture><PKey>*****-*****-*****-*****-MGGGY</PKey><PID>89572-011-0603964-71081</PID><PIDType>5</PIDType><SID>S-1-5-21-2091121211-2201319500-3504607323</SID><SYSTEM><Manufacturer>Dell Computer Corporation</Manufacturer><Model>Dimension 2400 </Model></SYSTEM><BIOS><Manufacturer>Dell Computer Corporation</Manufacturer><Version>A02</Version><SMBIOSVersion major="2" minor="3"/><Date>20030731000000.000000+000</Date></BIOS><HWID>6EA73B07018400F2</HWID><UserLCID>0409</UserLCID><SystemLCID>0409</SystemLCID><TimeZone>Eastern Standard Time(GMT-05:00)</TimeZone><iJoin>0</iJoin><SBID><stat>2</stat><msppid></msppid><name>Dell Computer Corporation</name><model>Dell DIMENSION DIM2400</model></SBID><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>3197BF2F674370C</Val><Hash>iQHjNvezVecuwp4cKEqmOwVV7gk=</Hash><Pid>81602-902-0183961-68660</Pid><PidType>1</PidType></Product></Products></Office></Software></GenuineResults>Spsys.log Content: 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
Friday, January 25, 2008 7:47 AM
Answers
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Hello Serts53,
My apologies for originally missing your posts. If you are still experiencing an Activation or Validation problems, with your Vista, please create a new thread and post an updated Diagnostic Report and a description of the issue.
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 "Copy" button, then Paste the report into a response message in the new thread.
Thank you,Darin Smith
WGA Forum Manager
Tuesday, July 1, 2008 9:54 PM