Packaging the nuget package on VSTS "Newtonsoft.Json" already has a dependency defined for "NETStandard.Library"

Question

Assembly packaging uses Nuget Packager in VSTS, and I get an error:

[error] 'Newtonsoft.Json' already has a dependency defined for 'NETStandard.Library'.

Most of the tips that solve this include updating nuget, but since I am building Team Services, I cannot do this.

Answer 1

We had the same problem today.

Using your own build agent

If you use your own build agents (rather than a hosted agent), you can manually upgrade the version of NuGet to the latest version. In my case, it solved my problems.

eg. C: \ agent \ physical \ NuGet \ nuget.exe

Using Hosted Agent

It's a little dirty, but you can just load the latest nuget.exe into the repo and install NuGet Packager to use this.

Answer 2

It seems that the nuget used by the nuget packager is not the last. After testing locally with the latest nuget.exe, everything worked, so I added a new powershell release step. This solution is suitable for VSTS, for TFS, where you have access to the server, I recommend updating nuget.exe on the server itself:

This script loads the nuget.exe file into the artifact directory (and displays the path to the nuget.exe file so you can see where it is placed.).

Then I changed the build step of Nuget Packager to use the just downloaded nuget.exe file.

Answer 3

For everyone who gets this in 2018, Microsoft has created a new version of the NuGet task that fixes this problem. No need for powershell installations.

Change the version of the NuGet task in the build step version to 2. *

This caused some changes for me that I allowed using the following additional settings

Nuget Recovery

Nuget pack

Injection