dotnet

dotnet/runtime

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

100 good first / help-wanted issues · C# · last activity Jul 1, 2026

dotnet hacktoberfest help-wanted
100 Open Issues Need Help Last updated: Jul 1, 2026

Open Issues Need Help

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arch-arm64 os-windows help wanted blocking-clean-ci-optional needs-further-triage in-pr area-System.Diagnostics.PerformanceCounter Known Build Error
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
help wanted area-Tools-ILVerification Priority:2 in-pr
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
enhancement area-System.Text.Json help wanted in-pr
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Net good first issue os-ios in-pr
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
good first issue help wanted area-CodeGen-coreclr
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
api-suggestion area-System.Runtime.CompilerServices help wanted in-pr
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
help wanted area-Tools-ILVerification
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.DirectoryServices help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
api-approved area-System.Reflection.Metadata help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Numerics help wanted in-pr
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
good first issue increase-code-coverage os-windows test-enhancement help wanted area-VM-threading-mono runtime-mono
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Numerics.Tensors test-bug help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
good first issue help wanted area-CodeGen-coreclr optimization in-pr
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
help wanted feature-request area-Extensions-Configuration in-pr
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
api-suggestion area-System.Runtime help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
help wanted area-CodeGen-coreclr
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
RISC-V support 20 days ago
help wanted area-VM-meta-mono arch-riscv
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
api-suggestion area-System.IO help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
documentation area-System.Text.Json help wanted in-pr
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Console os-windows help wanted in-pr
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
api-suggestion area-System.Text.Json help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Reflection.Emit help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Console help wanted in-pr
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Numerics help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
bug area-System.Console os-windows help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Collections help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
documentation area-Meta help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Net.Security good first issue help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Linq help wanted JitStress blocking-clean-ci-optional
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
api-approved area-System.Runtime.Intrinsics help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-Infrastructure-libraries help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
bug help wanted area-Extensions-Caching in-pr
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
documentation area-System.Xml help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.IO tenet-performance help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Numerics help wanted Cost:M in-pr reduce-unsafe
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
enhancement area-System.Net.Security help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
enhancement area-System.Net.Security help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Net.Security test-enhancement help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Net.Security disabled-test help wanted os-android
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
bug area-System.Reflection.Emit breaking-change help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
help wanted area-Tools-ILVerification in-pr
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Runtime help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
help wanted area-System.IO.Ports
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
api-suggestion area-System.Numerics help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Runtime tenet-performance help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
api-suggestion area-System.Linq help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
api-suggestion area-System.Runtime.CompilerServices help wanted code-analyzer
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Configuration help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Linq help wanted JitStress blocking-clean-ci-optional
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
tenet-reliability help wanted area-System.Diagnostics.Metric
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
api-suggestion area-System.Numerics help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
api-suggestion area-System.Numerics help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Numerics help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Runtime tenet-performance help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
api-suggestion area-System.Runtime help wanted code-analyzer
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
api-suggestion area-System.Threading.Channels help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
api-suggestion area-System.Threading.Channels help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
help wanted area-System.IO.Ports
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-Meta help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
documentation area-Meta help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
api-suggestion area-System.Collections help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Collections tenet-performance help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Buffers test-bug help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
bug area-Microsoft.Win32 help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Drawing help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Net.Http help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.IO.Pipelines help wanted
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
bug help wanted area-Extensions-Caching
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
test-bug help wanted area-Extensions-Hosting Known Build Error
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
area-System.Threading help wanted Priority:2
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted
disabled-test help wanted area-Extensions-Caching in-pr
dotnet/runtime
18.0K

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

C#
#dotnet#hacktoberfest#help-wanted