NuGet Manage Packages for Solution fails to open if the solution is not saved.

[rrelyea]

vsfeedback 804239 - https://developercommunity.visualstudio.com/content/problem/18837/nuget-manage-packages-for-solution-fails-to-open.html

Using the dotnet core from build 26206.00 Using the command line create a new dotnet core MVC app (dotnet new mvc --auth None) dotnet restore and dotnet run to hydrate and test the app Using visual studio open the csproj file (note at present there is no solution file present on disk - dotnet new does not produce one) Go Tools->Nuget Package Manager->manage Nuget packages for Solution An error dialog appears with HResult E_INVALIDARG (see attachment) Save the solution file (creates a real solution file on disk) Go Tools->Nuget Package Manager->manage Nuget packages for Solution The package manager now opens sucessfully. This is repeatable. It seems that a check is required to ensure that a solution file is present before using the package manager

[mishra14]

trying to get a machine and then repro

[mishra14]

unable to repro this. In my case dotnet new mvc --auth nonedid create a csproj file. I was able to open the project and update all packages

Update - Got a repro on manage packages for solution. Debugging.

[grbsystems]

Until I have a solution file it does this every time. I may try it on a totally clean (as opposed to continually upgraded) install.

[rrelyea]

Workaround: Save All or ctrl-shift-S (which saves solution) Then it works.

[grbsystems]

That is mentioned in the original problem report.

[mishra14]

I observed the same behavior for VS 2015 and VS2017 (Non netcore projects) on File -> New Project -> Delete solution file -> Manage NuGet Packages for Solution.

This can be fixed by adding a dialog prompt for the user asking them to save the solution.