How to Install a DLL to the GAC on Windows Server 2012 Using Only PowerShell

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In scenarios where adding a DLL to the Windows GAC (global assembly cache) using gacutil.exe does not work, or needs to be scripted, you can use PowerShell.

Add a DLL to the GAC

1. Run the Power Shell console as Administrator.
2. Enter the following PowerShell

Set-location "c:\Folder Path"            
[System.Reflection.Assembly]::Load("System.EnterpriseServices, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")            
$publish = New-Object System.EnterpriseServices.Internal.Publish            
$publish.GacInstall("c:\Folder Path\DLL.dll")            
iisreset

Remove a DLL from the GAC

1. Run the PowerShell console as Administrator.
2. Enter the following Power Shell

Set-location "c:\Folder Path"            
[System.Reflection.Assembly]::Load("System.EnterpriseServices, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")            
$publish = New-Object System.EnterpriseServices.Internal.Publish            
$publish.GacRemove("c:\Folder Path\DLL.dll")            
iisreset

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