WINDOWSXP安装IE8失败的解决方法：有些网站用IE6已经不行了，只好升级。但是安装IE8出现错误：首先声明我不想重装系统。查了网上大多数的解决方法，都不行，包括卸载全部WINDOWS更新包。删除\WINDOWS\INSTALLER、停止安全卫士、选IE7安装、清空ADMINISTRATOR密码（这损招是想干什么？）、查杀木马、查杀病毒。。。。。最后偶然在C:\WINDOWS目录下看到了IE8.log，打开有类似如下内容：[ie8.log]0.203:================================================================================0.203:2011/08/2918:02:52.421(local)0.203:e:\09f212f011e009931d62\update\update.exe(version6.3.15.0)0.219:Hotfixstartedwithfollowingcommandline:/quiet/norestart/er/log:C:\WINDOWS0.219:InFunctionGetReleaseSet,line1240,RegQueryValueExfailedwitherror0x20.235:IECUSTOM:Scanningforproperregistrypermissions...0.703:IECUSTOM:Scanningforproperregistrypermissions...0.860:IECUSTOM:Scanningforproperregistrypermissions...4.297:InFunctionTestVolatileFlag,line11825,RegOpenKeyExfailedwitherror0x24.297:InFunctionTestVolatileFlag,line11857,RegOpenKeyExfailedwitherror0x24.297:DoInstallation:CleanPFRfailed:0x24.297:InFunctionGetReleaseSet,line1240,RegQueryValueExfailedwitherror0x24.297:SetProductTypes:InfProductBuildType=BuildType.StartEN4.297:SetAltOsLoaderPath:NosectionusesDirId65701;done.………InFunctionSetVolatileFlag,line11741,RegOpenKeyExfailedwitherror0x283.735:InFunctionSetVolatileFlag,line11758,RegOpenKeyExfailedwitherror0x283.735:UpdateSpUpdSvcInf:Source[ProcessesToRunAfterReboot.RebootNotRequired]sectionisempty;nothingtodo.83.813:RebootNecessary=1,WizardInput=1,DontReboot=1,ForceRestart=00.260:================================================================================0.260:2013/01/1613:53:21.630(local)0.260:d:\7c70434bc4a3fab423ac7f475c\update\update.exe(version6.3.15.0)0.300:Hotfixstartedwithfollowingcommandline:/quiet/norestart/er/log:C:\WINDOWS0.330:InFunctionGetReleaseSet,line1240,RegQueryValueExfailedwitherror0x20.330:GetGroupIdFromPidGenDll:LoadLibraryfailedforC:\WINDOWS\system32\pidgen.dlldll0.330:1274CheckSystem:Failedtogetproductbuildtype.0.330:DoInstallation:CheckSystemFailed:0xf1170.340:InternetExplorer8的安装没有完成。0.340:Update.exeextendederrorcode=0xf1170.230:================================================================================0.240:2013/03/2713:40:50.470(local)0.240:f:\855a23a204975819bdeafef6ffee\update\update.exe(version6.3.15.0)0.270:Hotfixstartedwithfollowingcommandline:/quiet/norestart/er/log:C:\WINDOWS0.290:InFunctionGetReleaseSet,line1240,RegQueryValueExfailedwitherror0x20.290:GetGroupIdFromPidGenDll:LoadLibraryfailedforC:\WINDOWS\system32\pidgen.dlldll0.290:1274CheckSystem:Failedtogetproductbuildtype.0.290:DoInstallation:CheckSystemFailed:0xf1170.300:InternetExplorer8的安装没有完成。0.300:Update.exeextendederrorcode=0xf1170.150:================================================================================0.250:2013/03/2713:51:18.112(local)0.250:f:\2fdd61b737b8e389d0402b0601dc1745\update\update.exe(version6.3.15.0)0.521:Hotfixstartedwithfollowingcommandline:/quiet/norestart/er/log:C:\WINDOWS0.521:InFunctionGetReleaseSet,line1240,RegQueryValueExfailedwitherror0x20.521:GetGroupIdFromPidGenDll:LoadLibraryfailedforC:\WINDOWS\system32\pidgen.dlldll0.521:1274CheckSystem:Failedtogetproductbuildtype.0.521:DoInstallation:CheckSystemFailed:0xf1170.521:InternetExplorer8的安装没有完成。0.521:Update.exeextend...