Reset Windows Update Settings (Without Reboot)

There a various topics on this community about resetting windows updates to its default settings. The attached worklet is similair to others posted but it can be run without a reboot. So far we have very good results with this worklet in production environments and because the reboot is not necessary it can be used without user impact.

This worklet will me maintained on Github:

Evaluation Code

Exit 1

Remediation Code

$arch = Get-WMIObject -Class Win32_Processor -ComputerName LocalHost | Select-Object AddressWidth

#1. Stopping Windows Update Services...
Stop-Service -Name BITS
Stop-Service -Name wuauserv
Stop-Service -Name appidsvc
Stop-Service -Name cryptsvc

#2. Remove QMGR Data file...
Remove-Item "$env:allusersprofile\Microsoft\Network\Downloader\qmgr*.dat" -ErrorAction SilentlyContinue

#3. Renaming the Software Distribution and CatRoot Folder...
Remove-Item $env:systemroot\SoftwareDistribution.bak -ErrorAction SilentlyContinue
Rename-Item $env:systemroot\SoftwareDistribution SoftwareDistribution.bak -ErrorAction SilentlyContinue
# This may not work if the folder is locked by having a contained file being accessed
Remove-Item $env:systemroot\System32\Catroot2.bak -ErrorAction SilentlyContinue
Rename-Item $env:systemroot\System32\Catroot2 catroot2.bak -ErrorAction SilentlyContinue

#4. Removing old Windows Update log...
Remove-Item $env:systemroot\WindowsUpdate.log -ErrorAction SilentlyContinue

#5. Resetting the Windows Update Services to default settings...

[void]("sc.exe sdset bits D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPDTLOCRRC;;;PU)")
[void]("sc.exe sdset wuauserv D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPDTLOCRRC;;;PU)")

Set-Location $env:systemroot\system32

#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

#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

#8) Resetting the WinSock...
[void](netsh winsock reset)
[void](netsh winhttp reset proxy)

#9) Delete all BITS jobs...
Get-BitsTransfer | Remove-BitsTransfer

#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
}

#11) Starting Windows Update Services...
Start-Service -Name BITS
Start-Service -Name wuauserv
Start-Service -Name appidsvc
Start-Service -Name cryptsvc

#12) Forcing discovery...
wuauclt /resetauthorization /detectnow

Write-Output "Windows Update settings restored to default."
```
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