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Windows更新安装失败/0x8e5e0408错误/安装.NET失败

1. 同时按【Win+X】键,点选【Windows PowerShell(管理员)】
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:allusersprofile\Application Data\Microsoft\Network\Downloader\qmgr*.dat” -ErrorAction SilentlyContinue 

Write-Host “3. Renaming the Software Distribution and CatRoot Folder…” 
Rename-Item $env:systemroot\SoftwareDistribution SoftwareDistribution.bak -ErrorAction SilentlyContinue 
Rename-Item $env:systemroot\System32\Catroot2 catroot2.bak -ErrorAction SilentlyContinue 

Write-Host “4. Removing old Windows Update log…” 
Remove-Item $env:systemroot\WindowsUpdate.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:systemroot\system32 

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 “HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate” /v AccountDomainSid /f 
REG DELETE “HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate” /v PingID /f 
REG DELETE “HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate” /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.”

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