Troubleshooting the Lenovo ThinInstaller Installation

During OSD, install the Lenovo ThinInstaller, and have been doing this for quite some time.  Whenever a new build is released, we duplicate the source files and swapping out the older installer for the new.  This process worked well for several versions:

  • v1.2.0014
  • v1.2.0015
  • v1.2.0017
  • v1.2.0018

In early 2017 we updated our Lenovo ThinInstaller to v1.2.0020 and noticed that the ThinInstaller installation executable would run seemingly forever, but during OSD and in real Windows when installing manually.  We reverted back to 1.2.0018 until we could do more testing to narrow the scope of the problem.  Shortly afterwards, 1.2.0022 was released so we tried again thinking maybe it was a build-specific bug, but it too failed.

We spent a decent amount of time trying to hunt this down and confirmed it wasn’t:

  • unique to the Task Sequence
  • a model specific issue
  • an upgrade scenario (e.g.: only 1.2.0014 to 1.2.0022)
  • software that was already installed and causing a conflict
  • security software on the machine.

Again, we could reproduce at will by removing the new installer and restoring the old.

A while later we learned that Lenovo had made some changes to the ThinInstaller package, and you can read about that here:

To ensure the highest rate of installation success, we took the shotgun approach:

# Unregister the DLL if it's found - update the path accordingly
if(Test-Path -Path "$envProgramFilesX86\ThinInstaller\Lenovo.PnPSignedDriverEx.dll" -PathType Leaf)
        If(Test-Path -Path "$env:windir\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe" -PathType Leaf)
                Start-Process -FilePath "$env:windir\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe" -ArgumentList "/u `"$envProgramFilesX86\ThinInstaller\Lenovo.PnPSignedDriverEx.dll`"" -PassThru -Wait
        elseif(Test-Path -Path "$env:windir\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe" -PathType Leaf)
                Start-Process -FilePath "$env:windir\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe" -ArgumentList "/u `"$envProgramFilesX86\ThinInstaller\Lenovo.PnPSignedDriverEx.dll`"" -PassThru -Wait

# Remove the existing 'installation'
Rename-Item -Path "${env:ProgramFiles(x86)}\ThinInstaller" -NewName "ThinInstaller_$(Get-Date -Format 'yyyy-MM-dd_hhmmss')"; Start-Sleep -Seconds 3

# Perform the 'install'
Start-Process -FilePath 'thin_installer_VERSION.exe' -ArgumentList "/SP- /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /LOG=Path\To\Install.log" -Wait

# Drop in the ThinInstaller.exe.configuration
Copy-Item -Path $(Join-Path $PSScriptRoot 'ThinInstaller.exe.configuration') -Destination "${env:ProgramFiles(x86)}\ThinInstaller\ThinInstaller.exe.configuration" -Force<span 				data-mce-type="bookmark" 				id="mce_SELREST_start" 				data-mce-style="overflow:hidden;line-height:0" 				style="overflow:hidden;line-height:0" 			></span>


Some time around ThinInstaller v1.2.0029, the Lenovo.PnPSignedDriverEx.dll as well as the .cmd files used to register/unregister said DLL, quietly disappeared suggesting they either found a better way to do what they were doing or baked that process into their installer or … ?  That said, the above code is probably no longer needed.  However, since ThinInstaller is an application that’s generally available to all Lenovo machines in Software Center, we left the code in there on the off chance someone upgrades or uninstalls/reinstalls ThinInstaller on a machine with an older build.

If you find the ThinInstaller is hanging during upgrade scenarios, try the above to see if that helps.

If you find the ThinInstaller is hanging during a fresh installation, try generating a log and review the log file to see where it’s getting hung up then troubleshoot from there.

Good Providence To You!

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