CODEWITHSUNDEEP
visual-studioproxy
VVP
VVP

Reputation: 826

Unable to install Visual Studio Build tools behind Proxy (While creating Offline installer)

Background : I am trying to setup a build machine for dot net project . I need VS Build tools.

I have been trying to install Visual Studio Build tools behind Proxy, but installation gets blocked. Hence I used the offline installer method .

I downloaded vs-buildtools from this location "https://www.visualstudio.com/thank-you-downloading-visual-studio/?sku=BuildTools&rel=15"

I followed this link to setup offline installer "https://blogs.msdn.microsoft.com/vcblog/2016/11/16/introducing-the-visual-studio-build-tools/"

My command looks like 

vs_buildtools__1032894232.1529299355.exe --layout C:\softwares\vsoffline --add Microsoft.VisualStudio.Workload.MSBuildTools --add Microsoft.VisualStudio.Workload.VCTools --add Microsoft.VisualStudio.Workload.NetCoreBuildTools --add Microsoft.VisualStudio.Workload.WebBuildTools --add Microsoft.VisualStudio.Workload.VCTools --lang en-US

I see a download window with message "Download is completed." enter image description here

Then I see a error window with message

"Error: An item with the same key has already been added.

Press any key to continue...Error: An item with the same key has already been added." enter image description here

Any idea what's going wrong.

I thought it may be due to having an old VS in my laptop, so created a new vm in AWS without any VS installation and tried. Getting same error.

Upvotes: 3

Views: 4007

Answers (2)

phihos
phihos

Reputation: 1

In my case it was complaining about having set the environment variables "http_proxy" and "HTTP_PROXY". Just unset the latter. You need to do the same if you have set "https_proxy" and "no_proxy" in uppercase.

Upvotes: 0

Alex
Alex

Reputation: 846

I don't know nothing about this installer, but I've noticed that you have two identical records in your command line:

--add Microsoft.VisualStudio.Workload.VCTools

I'd suggest that you should only include every module once.

Upvotes: 2

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