当我们想要将自己正在使用的win10操作系统升级更新到win102004版本的话，对于在更新的过程中出现的WIN10系统更新2004版本卡在49%一直不动的情况，小编觉得我们可以先检查一下自己的网络，如果没有问题还有可以在管理员权限下使用命令提示符来修复。详细内容就来看下小编是怎么做的吧~
可能是因为您的更新组件有缺失的情况。
请您尝试下方方法，手动注册Windows Update组件：
1.同时按键，点选
2.拷贝下方的程序码到刚打开的PowerShell里面，按回车
3.忽略红字错误，重启电脑
4.运行Windows Update
$arch = Get-WMIObject -Class Win32_Processor -ComputerName LocalHost | Select-Object AddressWidth
Write-Host "1. Stopping Windows Update Services..."
Stop-Service -Name BITS
Stop-Service -Name wuauserv
Stop-Service -Name appidsvc
Stop-Service -Name cryptsvc
Write-Host "2. Remove QMGR Data file..."
Remove-Item "$env:allusersprofileApplication DataMicrosoftNetworkDownloaderqmgr*.dat" -ErrorAction SilentlyContinue
Write-Host "3. Renaming the Software Distribution and CatRoot Folder..."
Rename-Item $env:systemrootSoftwareDistribution SoftwareDistribution.bak -ErrorAction SilentlyContinue
Rename-Item $env:systemrootSystem32Catroot2 catroot2.bak -ErrorAction SilentlyContinue
Write-Host "4. Removing old Windows Update log..."
Remove-Item $env:systemrootWindowsUpdate.log -ErrorAction SilentlyContinue
Write-Host "5. Resetting the Windows Update Services to defualt settings..."
"sc.exe sdset bits D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPDTLOCRRC;;;PU)"
"sc.exe sdset wuauserv D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPDTLOCRRC;;;PU)"
Set-Location $env:systemrootsystem32
Write-Host "6. Registering some DLLs..."
regsvr32.exe /s atl.dll
regsvr32.exe /s urlmon.dll
regsvr32.exe /s mshtml.dll
regsvr32.exe /s shdocvw.dll
regsvr32.exe /s browseui.dll
regsvr32.exe /s jscript.dll
regsvr32.exe /s vbscript.dll
regsvr32.exe /s scrrun.dll
regsvr32.exe /s msxml.dll
regsvr32.exe /s msxml3.dll
regsvr32.exe /s msxml6.dll
regsvr32.exe /s actxprxy.dll
regsvr32.exe /s softpub.dll
regsvr32.exe /s wintrust.dll
regsvr32.exe /s dssenh.dll
regsvr32.exe /s rsaenh.dll
regsvr32.exe /s gpkcsp.dll
regsvr32.exe /s sccbase.dll
regsvr32.exe /s slbcsp.dll
regsvr32.exe /s cryptdlg.dll
regsvr32.exe /s oleaut32.dll
regsvr32.exe /s ole32.dll
regsvr32.exe /s shell32.dll
regsvr32.exe /s initpki.dll
regsvr32.exe /s wuapi.dll
regsvr32.exe /s wuaueng.dll
regsvr32.exe /s wuaueng1.dll
regsvr32.exe /s wucltui.dll
regsvr32.exe /s wups.dll
regsvr32.exe /s wups2.dll
regsvr32.exe /s wuweb.dll
regsvr32.exe /s qmgr.dll
regsvr32.exe /s qmgrprxy.dll
regsvr32.exe /s wucltux.dll
regsvr32.exe /s muweb.dll
regsvr32.exe /s wuwebv.dll
Write-Host "7) Removing WSUS client settings..."
REG DELETE "HKLMSOFTWAREMicrosoftWindowsCurrentVersionWindowsUpdate" /v AccountDomainSid /f
REG DELETE "HKLMSOFTWAREMicrosoftWindowsCurrentVersionWindowsUpdate" /v PingID /f
REG DELETE "HKLMSOFTWAREMicrosoftWindowsCurrentVersionWindowsUpdate" /v SusClientId /f
Write-Host "8) Resetting the WinSock..."
netsh winsock reset
netsh winhttp reset proxy
Write-Host "9) Delete all BITS jobs..."
Get-BitsTransfer | Remove-BitsTransfer
Write-Host "10) Attempting to install the Windows Update Agent..."
if($arch -eq 64){
wusa Windows8-RT-KB2937636-x64 /quiet
}
else{
wusa Windows8-RT-KB2937636-x86 /quiet
}
Write-Host "11) Starting Windows Update Services..."
Start-Service -Name BITS
Start-Service -Name wuauserv
Start-Service -Name appidsvc
Start-Service -Name cryptsvc
Write-Host "12) Forcing discovery..."
wuauclt /resetauthorization /detectnow
Write-Host "Process complete. Please reboot your computer."
