然后再运行一下，你就可以在线升级了。
其中第三、十四行的“ProductId"="69713-640-9722366-45198”都换成你自己系统ID，如图，打红线处就是。 原理不清楚，但是对任何windows2003版本都有效，保证可以在线升级
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Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows/CurrentVersion]
"ProductId"="69713-640-9722366-45198"
[HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows NT/CurrentVersion]
"CurrentBuild"="1.511.1 () (Obsolete data - do not use)"
"InstallDate"=dword:3f6c976d
"ProductName"="Microsoft Windows Server 2003"
"RegDone"=""
"SoftwareType"="SYSTEM"
"CurrentVersion"="5.2"
"CurrentBuildNumber"="3790"
"BuildLab"="3790.srv03_rtm.030324-2048"
"CurrentType"="Uniprocessor Free"
"ProductId"="69713-640-9722366-45198"
"DigitalProductId"=hex:a4,00,00,00,03,00,00,00,36,39,37,31,33,2d,36,34,30,2d,/
39,37,32,32,33,36,36,2d,34,35,31,39,38,00,5a,00,00,00,41,32,32,2d,30,30,30,/
30,31,00,00,00,00,00,00,00,00,e5,3f,e9,6a,2c,ed,25,35,12,ec,11,c9,8d,01,00,/
00,00,00,00,37,03,6d,3f,44,22,06,00,00,00,00,00,00,00,00,00,00,00,00,00,00,/
00,00,00,00,00,00,00,00,00,00,00,31,32,32,32,30,00,00,00,00,00,00,00,dc,0f,/
00,00,bf,4a,94,6c,80,00,00,00,15,18,00,00,00,00,00,00,00,00,00,00,00,00,00,/
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,34,79,ca,d7
"LicenseInfo"=hex:71,84,c7,56,a0,d6,10,6e,70,b4,9f,e9,10,1a,1e,7a,01,a4,41,09,/
25,20,0e,80,83,80,1f,31,27,86,64,1f,31,dc,22,af,f7,7d,aa,e4,2a,b9,e5,e3,6c,/
e2,01,69,85,70,91,be,a7,9f,95,e5
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