[Workaround found] NuGet errors in Windows build: NU1101 No packages exist with this id in source(s): Microsoft Visual Studio Offline Packages

[csinkers]

Description

I recently started getting failures in the Windows build for the dotnet action of my project, see https://github.com/csinkers/ualbion/runs/1574151895

Linux and macOS are still working fine, no project files / NuGet configurations have been changed since the last successful build. Sounds like it's only looking for locally cached packages rather than using nuget.org.

Details

Yaml:

name: .NET Core

on: [push]

jobs:
  build:

    runs-on: ${{ matrix.os }}
    strategy:
        matrix:
            os: [macOS-latest, ubuntu-latest, windows-latest]

    steps:
    - uses: actions/checkout@v2
    - name: Setup .NET Core
      uses: actions/setup-dotnet@v1
      with:
        dotnet-version: 3.1.100
    - name: Build with dotnet
      run: dotnet build --configuration Release src/UAlbion/UAlbion.csproj
    - name: Test with dotnet
      run: dotnet test ./src/ualbion.sln --configuration Release

Platform: windows-latest
Version: .NET Core 3.1.100
Action link: https://github.com/csinkers/ualbion/actions
Error messages:

D:\a\ualbion\ualbion\src\Core\UAlbion.Core.csproj : error NU1101: Unable to find package SerdesNet. No packages exist with this id in source(s): Microsoft Visual Studio Offline Packages [D:\a\ualbion\ualbion\src\UAlbion\UAlbion.csproj]
D:\a\ualbion\ualbion\src\Core\UAlbion.Core.csproj : error NU1101: Unable to find package Microsoft.CodeAnalysis.FxCopAnalyzers. No packages exist with this id in source(s): Microsoft Visual Studio Offline Packages [D:\a\ualbion\ualbion\src\UAlbion\UAlbion.csproj]
D:\a\ualbion\ualbion\src\Core\UAlbion.Core.csproj : error NU1101: Unable to find package System.Memory. No packages exist with this id in source(s): Microsoft Visual Studio Offline Packages [D:\a\ualbion\ualbion\src\UAlbion\UAlbion.csproj]
D:\a\ualbion\ualbion\src\Core\UAlbion.Core.csproj : error NU1102: Unable to find package Newtonsoft.Json with version (>= 12.0.2) [D:\a\ualbion\ualbion\src\UAlbion\UAlbion.csproj]

Was this a regression from previous behavior? – Yes

[Cyberboss]

Been having this issue since Monday (the 14th) at least

[GewoonJaap]

I updated a few of my nuGet packages, build worked, rerun the build, it failed. Hmm. Somesort of caching issue?

[GewoonJaap]

Found the fix, add this before the build (Ofcourse change the bumbo-web stuff to your own projectfolder/name):
- name: Clean
run: dotnet clean ./Bumbo-Web/Bumbo-Web.sln --configuration Release && dotnet nuget locals all --clear

[Cyberboss]

run: dotnet clean ./Bumbo-Web/Bumbo-Web.sln --configuration Release && dotnet nuget locals all --clear

Seems to have worked, thank you kindly.

[csinkers]

Looks like that did the trick, nice one!

[jasonleenaylor]

The workaround doesn't seem to be working for me.

Have you tried the nuget.config workaround? From what I see in your commits you tried the other workaround that clears the local cache.

The workaround doesn't seem to be working for me.

Have you tried the nuget.config workaround? From what I see in your commits you tried the other workaround that clears the local cache.

Yes that works. Thank you @GGG-KILLER !

[vsafonkin]

@jasonleenaylor, also you can try this step as workaround:

- run: dotnet nuget add source https://api.nuget.org/v3/index.json -n nuget.org --configfile $env:APPDATA\NuGet\NuGet.Config