dotnet/runtime Issues | Good First Issue

Stars: (17,886 stars)
Forks: (5,445 forks)
Indexed issues: (385 indexed issues)
open beginner issues: (368 open beginner issues)
Latest indexed: Jun 11, 2026
Last GitHub push: May 15, 2026
License: MIT License
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Dominant language: C#
PR merge metrics: (Avg merge 12d 11h) (661 merged PRs in 30d)
Beginner labels: help wantedgood first issue

Loading repository issues...

Issues

368 open indexed issues

RSS Atom

Open

`GenTreeAddrMode` has implicit truncation for its `gtOffset` field

area-CodeGen-coreclrhelp wanted

dotnet/runtime #86,609 opened May 22, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

1 comment1 reaction0 assignees

Open

Safer failure with COM/C++/vtable interop and RTTI

area-Interop-coreclrhelp wanted

dotnet/runtime #86,458 opened May 18, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

7 comments0 reactions0 assignees

Open

Consider renaming COM* types in clr native code to CLR*

area-VM-coreclrhelp wantedin-pr

dotnet/runtime #86,145 opened May 12, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

20 comments2 reactions0 assignees

Open

[NativeAOT] Link-time-optimize unmanaged portions of the runtime on Linux

area-NativeAOT-coreclrhelp wanted

dotnet/runtime #86,083 opened May 11, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

2 comments1 reaction0 assignees

Open

[Test Failure] System.Net.Security.Tests.SslStreamSniTest.UnencodedHostName_ValidatesCertificate on Android

area-System.Net.Securitydisabled-testhelp wantedos-android

dotnet/runtime #86,003 opened May 9, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

4 comments0 reactions0 assignees

Open

Directory path with special characters broken on MacOS Ventura 13.3.1

area-System.IOhelp wantedos-mac-os-x

dotnet/runtime #85,662 opened May 2, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

2 comments0 reactions0 assignees

Open

Analyzer: Introduce an analyzer to recommend the more efficient string splitting features in .NET 8

api-approvedarea-System.Runtimecode-analyzerhelp wantedpartner-impact

dotnet/runtime #85,487 opened Apr 27, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

3 comments0 reactions0 assignees

Open

[API Proposal]: Introduce an intrinsic for more efficient lambda generation

api-suggestionarea-System.Runtime.CompilerServiceshelp wantedin-pr

dotnet/runtime #85,014 opened Apr 18, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

30 comments11 reactions0 assignees

Open

CoreCLR RISC-V architecture port

arch-riscvarea-Metahelp wanted

dotnet/runtime #84,834 opened Apr 14, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

24 comments57 reactions0 assignees

Open

Unsupported LdapConnection.SessionOptions throws LdapException with Message "The LDAP server is unavailable" on Linux

area-System.DirectoryServiceshelp wanted

dotnet/runtime #84,825 opened Apr 14, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

4 comments0 reactions0 assignees

Open

Directory.Delete(string, bool) throws StackOverflowException

area-System.IOhelp wantedin-pr

dotnet/runtime #84,344 opened Apr 5, 2023 · C# · 17,886 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

16 comments0 reactions1 assignee

Open

Environment.IsPrivilegedProcess unexpectedly returns true on Windows

area-System.Runtimedocumentationhelp wantedos-windows

dotnet/runtime #84,137 opened Mar 30, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

5 comments2 reactions0 assignees

Open

Monitoring QUIC/HTTP3 read and written bytes

area-System.Net.Quichelp wanted

dotnet/runtime #84,093 opened Mar 29, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

8 comments0 reactions0 assignees

Open

JSON attributes docs should have mentions for corresponding metadata

area-System.Text.Jsondocumentationhelp wanted

dotnet/runtime #84,069 opened Mar 29, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

1 comment0 reactions0 assignees

Open

Deadlock in the Console.OutputEncoding setter

area-System.Consolehelp wantedos-linuxos-mac-os-x

dotnet/runtime #83,723 opened Mar 21, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

4 comments0 reactions0 assignees

Open

System.Console.Clear() sometimes did not clear the console buffer.

area-System.Consolehelp wanted

dotnet/runtime #83,568 opened Mar 17, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

2 comments0 reactions0 assignees

Open

Cannot connect NamedPipeClientStream later when constructing it with an existing pipe handle

area-System.IOhelp wanted

dotnet/runtime #83,073 opened Mar 7, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

1 comment2 reactions0 assignees

Open

Expose setting CPU SamplingProfiler rate

area-Tracing-coreclrenhancementhelp wanted

dotnet/runtime #82,939 opened Mar 3, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

6 comments13 reactions0 assignees

Open

Confusing documentation for `AggregateException.GetBaseException()`

area-System.Runtimedocumentationhelp wanted

dotnet/runtime #82,853 opened Mar 1, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

10 comments2 reactions0 assignees

Open

LdapConnection does not handle passwords containing UTF-8 characters on Linux

area-System.DirectoryServiceshelp wanted

dotnet/runtime #82,601 opened Feb 24, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

14 comments0 reactions0 assignees

Stars: (17,886 stars)
Forks: (5,445 forks)
Indexed issues: (385 indexed issues)
open beginner issues: (368 open beginner issues)
Latest indexed: Jun 11, 2026
Last GitHub push: May 15, 2026
License: MIT License
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Dominant language: C#
PR merge metrics: (Avg merge 12d 11h) (661 merged PRs in 30d)
Beginner labels: help wantedgood first issue

Issues

368 open indexed issues

RSS Atom

Open

`GenTreeAddrMode` has implicit truncation for its `gtOffset` field

area-CodeGen-coreclrhelp wanted

dotnet/runtime #86,609 opened May 22, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

1 comment1 reaction0 assignees

Open

Safer failure with COM/C++/vtable interop and RTTI

area-Interop-coreclrhelp wanted

dotnet/runtime #86,458 opened May 18, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

7 comments0 reactions0 assignees

Open

Consider renaming COM* types in clr native code to CLR*

area-VM-coreclrhelp wantedin-pr

dotnet/runtime #86,145 opened May 12, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

20 comments2 reactions0 assignees

Open

[NativeAOT] Link-time-optimize unmanaged portions of the runtime on Linux

area-NativeAOT-coreclrhelp wanted

dotnet/runtime #86,083 opened May 11, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

2 comments1 reaction0 assignees

Open

[Test Failure] System.Net.Security.Tests.SslStreamSniTest.UnencodedHostName_ValidatesCertificate on Android

area-System.Net.Securitydisabled-testhelp wantedos-android

dotnet/runtime #86,003 opened May 9, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

4 comments0 reactions0 assignees

Open

Directory path with special characters broken on MacOS Ventura 13.3.1

area-System.IOhelp wantedos-mac-os-x

dotnet/runtime #85,662 opened May 2, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

2 comments0 reactions0 assignees

Open

Analyzer: Introduce an analyzer to recommend the more efficient string splitting features in .NET 8

api-approvedarea-System.Runtimecode-analyzerhelp wantedpartner-impact

dotnet/runtime #85,487 opened Apr 27, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

3 comments0 reactions0 assignees

Open

[API Proposal]: Introduce an intrinsic for more efficient lambda generation

api-suggestionarea-System.Runtime.CompilerServiceshelp wantedin-pr

dotnet/runtime #85,014 opened Apr 18, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

30 comments11 reactions0 assignees

Open

CoreCLR RISC-V architecture port

arch-riscvarea-Metahelp wanted

dotnet/runtime #84,834 opened Apr 14, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

24 comments57 reactions0 assignees

Open

Unsupported LdapConnection.SessionOptions throws LdapException with Message "The LDAP server is unavailable" on Linux

area-System.DirectoryServiceshelp wanted

dotnet/runtime #84,825 opened Apr 14, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

4 comments0 reactions0 assignees

Open

Directory.Delete(string, bool) throws StackOverflowException

area-System.IOhelp wantedin-pr

dotnet/runtime #84,344 opened Apr 5, 2023 · C# · 17,886 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

16 comments0 reactions1 assignee

Open

Environment.IsPrivilegedProcess unexpectedly returns true on Windows

area-System.Runtimedocumentationhelp wantedos-windows

dotnet/runtime #84,137 opened Mar 30, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

5 comments2 reactions0 assignees

Open

Monitoring QUIC/HTTP3 read and written bytes

area-System.Net.Quichelp wanted

dotnet/runtime #84,093 opened Mar 29, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

8 comments0 reactions0 assignees

Open

JSON attributes docs should have mentions for corresponding metadata

area-System.Text.Jsondocumentationhelp wanted

dotnet/runtime #84,069 opened Mar 29, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

1 comment0 reactions0 assignees

Open

Deadlock in the Console.OutputEncoding setter

area-System.Consolehelp wantedos-linuxos-mac-os-x

dotnet/runtime #83,723 opened Mar 21, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

4 comments0 reactions0 assignees

Open

System.Console.Clear() sometimes did not clear the console buffer.

area-System.Consolehelp wanted

dotnet/runtime #83,568 opened Mar 17, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

2 comments0 reactions0 assignees

Open

Cannot connect NamedPipeClientStream later when constructing it with an existing pipe handle

area-System.IOhelp wanted

dotnet/runtime #83,073 opened Mar 7, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

1 comment2 reactions0 assignees

Open

Expose setting CPU SamplingProfiler rate

area-Tracing-coreclrenhancementhelp wanted

dotnet/runtime #82,939 opened Mar 3, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

6 comments13 reactions0 assignees

Open

Confusing documentation for `AggregateException.GetBaseException()`

area-System.Runtimedocumentationhelp wanted

dotnet/runtime #82,853 opened Mar 1, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

10 comments2 reactions0 assignees

Open

LdapConnection does not handle passwords containing UTF-8 characters on Linux

area-System.DirectoryServiceshelp wanted

dotnet/runtime #82,601 opened Feb 24, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

14 comments0 reactions0 assignees

Stars: (17,886 stars)
Forks: (5,445 forks)
Indexed issues: (385 indexed issues)
open beginner issues: (368 open beginner issues)
Latest indexed: Jun 11, 2026
Last GitHub push: May 15, 2026
License: MIT License
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Dominant language: C#
PR merge metrics: (Avg merge 12d 11h) (661 merged PRs in 30d)
Beginner labels: help wantedgood first issue

Loading repository issues...

Issues

368 open indexed issues

RSS Atom

Open

`GenTreeAddrMode` has implicit truncation for its `gtOffset` field

area-CodeGen-coreclrhelp wanted

dotnet/runtime #86,609 opened May 22, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

1 comment1 reaction0 assignees

Open

Safer failure with COM/C++/vtable interop and RTTI

area-Interop-coreclrhelp wanted

dotnet/runtime #86,458 opened May 18, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

7 comments0 reactions0 assignees

Open

Consider renaming COM* types in clr native code to CLR*

area-VM-coreclrhelp wantedin-pr

dotnet/runtime #86,145 opened May 12, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

20 comments2 reactions0 assignees

Open

[NativeAOT] Link-time-optimize unmanaged portions of the runtime on Linux

area-NativeAOT-coreclrhelp wanted

dotnet/runtime #86,083 opened May 11, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

2 comments1 reaction0 assignees

Open

[Test Failure] System.Net.Security.Tests.SslStreamSniTest.UnencodedHostName_ValidatesCertificate on Android

area-System.Net.Securitydisabled-testhelp wantedos-android

dotnet/runtime #86,003 opened May 9, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

4 comments0 reactions0 assignees

Open

Directory path with special characters broken on MacOS Ventura 13.3.1

area-System.IOhelp wantedos-mac-os-x

dotnet/runtime #85,662 opened May 2, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

2 comments0 reactions0 assignees

Open

Analyzer: Introduce an analyzer to recommend the more efficient string splitting features in .NET 8

api-approvedarea-System.Runtimecode-analyzerhelp wantedpartner-impact

dotnet/runtime #85,487 opened Apr 27, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

3 comments0 reactions0 assignees

Open

[API Proposal]: Introduce an intrinsic for more efficient lambda generation

api-suggestionarea-System.Runtime.CompilerServiceshelp wantedin-pr

dotnet/runtime #85,014 opened Apr 18, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

30 comments11 reactions0 assignees

Open

CoreCLR RISC-V architecture port

arch-riscvarea-Metahelp wanted

dotnet/runtime #84,834 opened Apr 14, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

24 comments57 reactions0 assignees

Open

Unsupported LdapConnection.SessionOptions throws LdapException with Message "The LDAP server is unavailable" on Linux

area-System.DirectoryServiceshelp wanted

dotnet/runtime #84,825 opened Apr 14, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

4 comments0 reactions0 assignees

Open

Directory.Delete(string, bool) throws StackOverflowException

area-System.IOhelp wantedin-pr

dotnet/runtime #84,344 opened Apr 5, 2023 · C# · 17,886 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

16 comments0 reactions1 assignee

Open

Environment.IsPrivilegedProcess unexpectedly returns true on Windows

area-System.Runtimedocumentationhelp wantedos-windows

dotnet/runtime #84,137 opened Mar 30, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

5 comments2 reactions0 assignees

Open

Monitoring QUIC/HTTP3 read and written bytes

area-System.Net.Quichelp wanted

dotnet/runtime #84,093 opened Mar 29, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

8 comments0 reactions0 assignees

Open

JSON attributes docs should have mentions for corresponding metadata

area-System.Text.Jsondocumentationhelp wanted

dotnet/runtime #84,069 opened Mar 29, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

1 comment0 reactions0 assignees

Open

Deadlock in the Console.OutputEncoding setter

area-System.Consolehelp wantedos-linuxos-mac-os-x

dotnet/runtime #83,723 opened Mar 21, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

4 comments0 reactions0 assignees

Open

System.Console.Clear() sometimes did not clear the console buffer.

area-System.Consolehelp wanted

dotnet/runtime #83,568 opened Mar 17, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

2 comments0 reactions0 assignees

Open

Cannot connect NamedPipeClientStream later when constructing it with an existing pipe handle

area-System.IOhelp wanted

dotnet/runtime #83,073 opened Mar 7, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

1 comment2 reactions0 assignees

Open

Expose setting CPU SamplingProfiler rate

area-Tracing-coreclrenhancementhelp wanted

dotnet/runtime #82,939 opened Mar 3, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

6 comments13 reactions0 assignees

Open

Confusing documentation for `AggregateException.GetBaseException()`

area-System.Runtimedocumentationhelp wanted

dotnet/runtime #82,853 opened Mar 1, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

10 comments2 reactions0 assignees

Open

LdapConnection does not handle passwords containing UTF-8 characters on Linux

area-System.DirectoryServiceshelp wanted

dotnet/runtime #82,601 opened Feb 24, 2023 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

14 comments0 reactions0 assignees

dotnet/runtime

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