If you want to install a DLL in the GAC and do not have the GACUtil.exe available. Powershell is properly the easiest way to procede. Before Powershell you would properly just drag the DLL file into the C:\Windows\Assembly but this option is usually not available anymore. Powershell - Add DLL to GAC So to install a DLL file in the GAC simply execute the below Powershell script. Remember you migth want to run the Powershell prompt as an administrator. [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:\temp\MyDllFile.dll" ) iisreset The first line adds a reference to the assembly we need to be able to mange the GAC. The second and third lines retrives the GAC object and publish a new DLL file to it. The last line resets the Internet Informat...
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