Running in VS2019 Admin Cmd window -- gacutil.exe error: "Failure adding assembly to the cache. The system cannot find the file specified."

Question

Running in VS2019 Admin Cmd window -- gacutil.exe error: "Failure adding assembly to the cache. The system cannot find the file specified." GAC util path: C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.7.2 Tools\gacutil.exe Command line: gacutil.exe -i "DuraSysOrdFuncs.dll" -r FILEPATH "C:\Windows\DuraSysOrdFuncs.dll" "" I picked this version of GACUtil just because the C# library was built with a target framework of .Net 4.7. It isn't clear to me that it much matters. Doesn't matter what I put in the 3rd parameter of -r. Doesn't matter where I put my assembly on my local disk. Same error message. I'm trying to put this in GAC because I need to call it from an SSIS package running on SQL Server 2016. I have opened Sysinternals ProcMon per a suggestion of @HansPassant in a different post. Not familiar with tool so haven't found the file location error. . . if that is the actual issue.

Any input much appreciated

Answer 1

The answer, as the commenters noted, and as ProcMon indicates, is to just include the path for the .net assembly you're registering: gacutil.exe -i "C:\YourAssemblyFileLocation\YourDLL.Dll" That's all it takes. . .you don't normally need -r parameters, etc. Thanks!

Answer 2

You can use powershell to register assemblies into GAC. It doesn't need any specific installation.

Set-location "C:\Temp" [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\myGacLibrary.dll")

If you need to get the name and PublicKeyToken, refer How do I find the PublicKeyToken for a particular dll?