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error NU1101: Unable to find package X. No packages exist with this id in source(s): nuget.org

verified onenvironmentlocal · windows 10.0.26200 arm64 · GNU bash 5.3.15 (Git Bash)updated
tool
NuGet
exit code
1
versions
.NET 6 – 10 SDK, NuGet 6.x – 7.x
os
any

error NU1101: Unable to find package X. No packages exist with this id in source(s): nuget.org means NuGet asked every configured package source for the package id and none of them has it. The sources listed at the end are the ones that were searched. The id is usually misspelled, or the package is on a private feed that is not configured for this project. Fix the id, or add the feed to nuget.config.

Reproduce it

bash
cat > nuget.config <<'EOF'
<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <packageSources>
    <clear />
    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
  </packageSources>
</configuration>
EOF
cat > App.csproj <<'EOF'
<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net10.0</TargetFramework>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Newtonsoft.Jsonn" Version="13.0.3" />
  </ItemGroup>
</Project>
EOF
dotnet restore 2>&1 | grep -oE "error NU1101: [^[]*" | sed 's/ *$//' | sort -u
exit "${PIPESTATUS[0]}"

Output · exit 1

error NU1101: Unable to find package Newtonsoft.Jsonn. No packages exist with this id in source(s): nuget.org

The id has an extra n. dotnet build and dotnet add package report the same error, since both restore first.

Fix

Correct the id (or add the source that hosts the package), then restore again:

bash
cat > nuget.config <<'EOF'
<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <packageSources>
    <clear />
    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
  </packageSources>
</configuration>
EOF
cat > App.csproj <<'EOF'
<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net10.0</TargetFramework>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
  </ItemGroup>
</Project>
EOF
dotnet restore -v q > /dev/null
echo "restore exit=$?"

Output

restore exit=0

Private feeds

nuget.config
<configuration>
  <packageSources>
    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
    <add key="company" value="https://pkgs.example.com/nuget/v3/index.json" />
  </packageSources>
</configuration>

Keep credentials out of the committed file: use dotnet nuget update source company --username USER --password TOKEN --store-password-in-clear-text on build machines only, or the credential provider your feed documents.

Sources

Related pages

errors · nugeterror NU1102: Unable to find package X with version (>= Y)NU1102 means the package exists but no configured source has a version in the requested range: a typo, a prerelease, or a lagging feed. Use a real version.config · nugetnuget.config packageSources: add a private feed and clear the defaultspackageSources in nuget.config lists the feeds NuGet restores from. Use clear to drop inherited ones, add a private feed, check with dotnet nuget list source.commands · nugetClear the NuGet cache: dotnet nuget locals all --cleardotnet nuget locals all --clear deletes the NuGet global packages folder, HTTP cache, temp and plugins caches. --list shows where they are; clear one at a time.