Using GACUTIL in Post-build event in Visual Studio on Windows 10

Question

I have a Visual Studio 2012 project that creates an SSIS custom task. In the Post-build event, I have this:-

cd $(ProjectDir)
@SET TASKDIR="C:\Program Files (x86)\Microsoft SQL Server\110\DTS\Tasks\"
@SET GACUTIL="C:\Program Files (x86)\Microsoft SDKs\Windows\v8.0A\bin\NETFX 4.0 Tools\gacutil.exe"
Echo Installing dll in GAC
Echo $(OutDir)
Echo $(TargetFileName)
%GACUTIL% -if "$(OutDir)$(TargetFileName)"
Echo Copying files to Tasks
copy "$(OutDir)$(TargetFileName)" %TASKDIR%

which used to work with Windows 7.

Today, for the first time, I have tried to do this on Windows 10 and I'm getting:-

Failure adding assembly to the cache: Administrator permissions are needed to use the selected options.

If I start a command window as Administrator and use the command:-

C:\Program Files (x86)\Microsoft SDKs\Windows\v8.0A\bin\NETFX 4.0 Tools\gacutil.exe" -if "C:\Users\Kevin\Documents\Visual Studio 2012\Projects\SSISCompressionTask\SSISCompressionTask\bin\Debug\<Task Name>.dll

it works.

How do I continue to put the assembly in the GAC from the Post-build event in Visual Stusio please?

Thanks

If you launch your Visual Studio as an administrator, does that allow the post build step to GAC your assembly? — billinkc, Oct 22 '20 at 16:16
Good question, I don't know. I'll give it a try and let you know. Thanks — Kevin Balmforth, Oct 23 '20 at 11:20

score 1 · Answer 1 · edited Oct 23 '20 at 14:20

I started Visual Studio as an administrator and that now allows me to install the dll in the GAC and to copy the files to the Tasks folder which, I hadn't mentioned, wasn't working either.

If you want to ensure Visual Studio always runs as administrator,

Start Menu -> More -> Open file location