背景
系统在01.30后一直都更新不了，但不知道原因，卡住无法下一步，只可以刷新。
思路
先看日志找原因。全新安装是不可能全新安装的，大量资料需要配置，成本过高，增强文件备份意识；禁止全新安装；
资料
https://docs.microsoft.com/zh-CN/windows/deployment/update/windows-update-logs https://answers.microsoft.com/en-us/windows/forum/windows_10-other_settings/how-do-i-fix-error-0xc1900209/715b8e76-bf79-4f32-b1a1-e469cf4eaa9b
过程
通过SetupDiag.exe得到Logs.zip 看相关时间的xml日志
<Devices xmlns=""/>
<DriverPackages xmlns="">
<DriverPackage Inf="oem63.inf" BlockMigration="False" HasSignedBinaries="True"/>
<DriverPackage Inf="oem59.inf" BlockMigration="False" HasSignedBinaries="True"/>
<DriverPackage Inf="oem73.inf" BlockMigration="False" HasSignedBinaries="True"/>
<DriverPackage Inf="oem14.inf" BlockMigration="False" HasSignedBinaries="True"/>
<DriverPackage Inf="oem3.inf" BlockMigration="False" HasSignedBinaries="True"/>
<DriverPackage Inf="oem1.inf" BlockMigration="False" HasSignedBinaries="True"/>
<DriverPackage Inf="oem71.inf" BlockMigration="False" HasSignedBinaries="True"/>
<DriverPackage Inf="oem17.inf" BlockMigration="False" HasSignedBinaries="True"/>
<DriverPackage Inf="oem70.inf" BlockMigration="False" HasSignedBinaries="True"/>
<DriverPackage Inf="oem37.inf" BlockMigration="False" HasSignedBinaries="True"/>
<DriverPackage Inf="oem54.inf" BlockMigration="True" HasSignedBinaries="False"/>
<DriverPackage Inf="oem53.inf" BlockMigration="True" HasSignedBinaries="False"/>
<DriverPackage Inf="oem29.inf" BlockMigration="False" HasSignedBinaries="True"/>
<DriverPackage Inf="oem65.inf" BlockMigration="False" HasSignedBinaries="True"/>
</DriverPackages>
<Programs xmlns="">
<Program Name="VirtualBox" Id="000613fe11074660ed3e9de1fbca29f1bfcb00000904" IconId="virtualbox.exe_ae33342078ecec62">
<CompatibilityInfo BlockingType="Hard" StatusDetail="UpgradeBlock"/>
<Action Name="ManualUninstall" DisplayStyle="Text" ResolveState="NotRun"/>
</Program>
</Programs>
猜测可能是VirtualBox的原因；尝试卸载；在控制面板没有找到； 使用everything将C盘内的VirtualBox相关文件进行删除；
在安装程序点击刷新；成功！进入下一步安装；