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

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Issues

368 open indexed issues

RSS Atom

Open

Loading a self-contained executable with custom runtime host returns error about missing .deps.json file

area-Hostdocumentationhelp wanted

dotnet/runtime #76,080 opened Sep 23, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

12 comments0 reactions0 assignees

Open

GC.KeepAlive doesn't keep local delegate alive in mono (Xamarin.Android)

api-approvedarea-System.Threading.Taskscode-analyzerhelp wanted

dotnet/runtime #74,966 opened Sep 1, 2022 · C# · 17,886 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

24 comments0 reactions1 assignee

Open

[Analyzer] Adjust/simplify code for numeric IntPtr

api-approvedarea-Metacode-analyzercode-fixerhelp wanted

dotnet/runtime #74,518 opened Aug 24, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

6 comments1 reaction0 assignees

Open

Unnecessary shr emitted for repeated multiplication

area-CodeGen-coreclrgood first issuehelp wanted

dotnet/runtime #74,020 opened Aug 16, 2022 · C# · 17,886 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

5 comments0 reactions1 assignee

Open

gcc ubsan reports pointer overflow in bitsetasshortlong perhaps a false positive

area-CodeGen-coreclrhelp wanted

dotnet/runtime #73,964 opened Aug 15, 2022 · 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

Resolve ILVerify assembly references from `.deps.json`.

Priority:3area-Tools-ILVerificationfeature-requesthelp wanted

dotnet/runtime #73,922 opened Aug 14, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

3 comments1 reaction0 assignees

Open

Add ability to trim DtdParser when using default XmlReader settings

area-System.Xmlhelp wantedlinkable-framework

dotnet/runtime #73,465 opened Aug 5, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

6 comments3 reactions0 assignees

Open

`GetTypeByMetadataName` should be banned

area-Metahelp wanted

dotnet/runtime #72,336 opened Jul 17, 2022 · 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

Duplicate object keys shouldn't result in an ArgumentException

area-System.Text.Jsonbughelp wanted

dotnet/runtime #71,784 opened Jul 7, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

9 comments7 reactions0 assignees

Open

JIT: Reloc is not used in Tier1 for this simple snippet

area-CodeGen-coreclrhelp wantedtenet-performance

dotnet/runtime #71,545 opened Jul 1, 2022 · 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

[API Proposal]: SequenceReader<T>.TryAdvanceTo(ReadOnlySpan<T> delimiter)

api-approvedarea-System.Buffershelp wantedin-pr

dotnet/runtime #71,471 opened Jun 30, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

3 comments8 reactions0 assignees

Open

Enhance the NTLM negotiation testing on Linux/macOS

area-System.Net.Securityhelp wantedtest-enhancement

dotnet/runtime #71,427 opened Jun 29, 2022 · 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

Support implicit TLS for SMTP client

area-System.Net.Securityenhancementhelp wanted

dotnet/runtime #71,304 opened Jun 26, 2022 · 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

[Analyzer/fixer suggestion]: Exceptions thrown inside async methods should be wrapped by Task.FromException

api-approvedarea-System.Threading.Taskscode-analyzercode-fixerhelp wanted

dotnet/runtime #70,905 opened Jun 17, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

7 comments2 reactions0 assignees

Open

JsonSerializer does not support parsing DateTime value '0001-01-01T00:00:00+01:00'

area-System.Text.Jsonenhancementhelp wanted

dotnet/runtime #70,547 opened Jun 10, 2022 · 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

Double.ToString with two section separators and negative zero placing additional negative sign in output

area-System.Numericsbughelp wanted

dotnet/runtime #70,460 opened Jun 8, 2022 · C# · 17,886 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

7 comments2 reactions1 assignee

Open

`ConsoleStream.ReadByte` throws when `Console.Encoding` is UTF-16

area-System.Consolehelp wanted

dotnet/runtime #70,448 opened Jun 8, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

6 comments1 reaction0 assignees

Open

Reconsider the exception type thrown when trying to open a directory as file

area-System.IOhelp wanted

dotnet/runtime #70,275 opened Jun 6, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

6 comments0 reactions0 assignees

Open

Analyzer for cases when the `Dispose()` pattern is introduced after the fact

api-approvedarea-System.Runtimecode-analyzercode-fixerhelp wanted

dotnet/runtime #70,188 opened Jun 3, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

3 comments1 reaction0 assignees

Open

Review and update `ryujit-tutorial.md`

area-CodeGen-coreclrhelp wanted

dotnet/runtime #69,988 opened May 30, 2022 · C# · 17,886 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

2 comments0 reactions1 assignee

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

Loading a self-contained executable with custom runtime host returns error about missing .deps.json file

area-Hostdocumentationhelp wanted

dotnet/runtime #76,080 opened Sep 23, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

12 comments0 reactions0 assignees

Open

GC.KeepAlive doesn't keep local delegate alive in mono (Xamarin.Android)

api-approvedarea-System.Threading.Taskscode-analyzerhelp wanted

dotnet/runtime #74,966 opened Sep 1, 2022 · C# · 17,886 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

24 comments0 reactions1 assignee

Open

[Analyzer] Adjust/simplify code for numeric IntPtr

api-approvedarea-Metacode-analyzercode-fixerhelp wanted

dotnet/runtime #74,518 opened Aug 24, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

6 comments1 reaction0 assignees

Open

Unnecessary shr emitted for repeated multiplication

area-CodeGen-coreclrgood first issuehelp wanted

dotnet/runtime #74,020 opened Aug 16, 2022 · C# · 17,886 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

5 comments0 reactions1 assignee

Open

gcc ubsan reports pointer overflow in bitsetasshortlong perhaps a false positive

area-CodeGen-coreclrhelp wanted

dotnet/runtime #73,964 opened Aug 15, 2022 · 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

Resolve ILVerify assembly references from `.deps.json`.

Priority:3area-Tools-ILVerificationfeature-requesthelp wanted

dotnet/runtime #73,922 opened Aug 14, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

3 comments1 reaction0 assignees

Open

Add ability to trim DtdParser when using default XmlReader settings

area-System.Xmlhelp wantedlinkable-framework

dotnet/runtime #73,465 opened Aug 5, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

6 comments3 reactions0 assignees

Open

`GetTypeByMetadataName` should be banned

area-Metahelp wanted

dotnet/runtime #72,336 opened Jul 17, 2022 · 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

Duplicate object keys shouldn't result in an ArgumentException

area-System.Text.Jsonbughelp wanted

dotnet/runtime #71,784 opened Jul 7, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

9 comments7 reactions0 assignees

Open

JIT: Reloc is not used in Tier1 for this simple snippet

area-CodeGen-coreclrhelp wantedtenet-performance

dotnet/runtime #71,545 opened Jul 1, 2022 · 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

[API Proposal]: SequenceReader<T>.TryAdvanceTo(ReadOnlySpan<T> delimiter)

api-approvedarea-System.Buffershelp wantedin-pr

dotnet/runtime #71,471 opened Jun 30, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

3 comments8 reactions0 assignees

Open

Enhance the NTLM negotiation testing on Linux/macOS

area-System.Net.Securityhelp wantedtest-enhancement

dotnet/runtime #71,427 opened Jun 29, 2022 · 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

Support implicit TLS for SMTP client

area-System.Net.Securityenhancementhelp wanted

dotnet/runtime #71,304 opened Jun 26, 2022 · 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

[Analyzer/fixer suggestion]: Exceptions thrown inside async methods should be wrapped by Task.FromException

api-approvedarea-System.Threading.Taskscode-analyzercode-fixerhelp wanted

dotnet/runtime #70,905 opened Jun 17, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

7 comments2 reactions0 assignees

Open

JsonSerializer does not support parsing DateTime value '0001-01-01T00:00:00+01:00'

area-System.Text.Jsonenhancementhelp wanted

dotnet/runtime #70,547 opened Jun 10, 2022 · 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

Double.ToString with two section separators and negative zero placing additional negative sign in output

area-System.Numericsbughelp wanted

dotnet/runtime #70,460 opened Jun 8, 2022 · C# · 17,886 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

7 comments2 reactions1 assignee

Open

`ConsoleStream.ReadByte` throws when `Console.Encoding` is UTF-16

area-System.Consolehelp wanted

dotnet/runtime #70,448 opened Jun 8, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

6 comments1 reaction0 assignees

Open

Reconsider the exception type thrown when trying to open a directory as file

area-System.IOhelp wanted

dotnet/runtime #70,275 opened Jun 6, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

6 comments0 reactions0 assignees

Open

Analyzer for cases when the `Dispose()` pattern is introduced after the fact

api-approvedarea-System.Runtimecode-analyzercode-fixerhelp wanted

dotnet/runtime #70,188 opened Jun 3, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

3 comments1 reaction0 assignees

Open

Review and update `ryujit-tutorial.md`

area-CodeGen-coreclrhelp wanted

dotnet/runtime #69,988 opened May 30, 2022 · C# · 17,886 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

2 comments0 reactions1 assignee

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

Loading a self-contained executable with custom runtime host returns error about missing .deps.json file

area-Hostdocumentationhelp wanted

dotnet/runtime #76,080 opened Sep 23, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

12 comments0 reactions0 assignees

Open

GC.KeepAlive doesn't keep local delegate alive in mono (Xamarin.Android)

api-approvedarea-System.Threading.Taskscode-analyzerhelp wanted

dotnet/runtime #74,966 opened Sep 1, 2022 · C# · 17,886 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

24 comments0 reactions1 assignee

Open

[Analyzer] Adjust/simplify code for numeric IntPtr

api-approvedarea-Metacode-analyzercode-fixerhelp wanted

dotnet/runtime #74,518 opened Aug 24, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

6 comments1 reaction0 assignees

Open

Unnecessary shr emitted for repeated multiplication

area-CodeGen-coreclrgood first issuehelp wanted

dotnet/runtime #74,020 opened Aug 16, 2022 · C# · 17,886 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

5 comments0 reactions1 assignee

Open

gcc ubsan reports pointer overflow in bitsetasshortlong perhaps a false positive

area-CodeGen-coreclrhelp wanted

dotnet/runtime #73,964 opened Aug 15, 2022 · 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

Resolve ILVerify assembly references from `.deps.json`.

Priority:3area-Tools-ILVerificationfeature-requesthelp wanted

dotnet/runtime #73,922 opened Aug 14, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

3 comments1 reaction0 assignees

Open

Add ability to trim DtdParser when using default XmlReader settings

area-System.Xmlhelp wantedlinkable-framework

dotnet/runtime #73,465 opened Aug 5, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

6 comments3 reactions0 assignees

Open

`GetTypeByMetadataName` should be banned

area-Metahelp wanted

dotnet/runtime #72,336 opened Jul 17, 2022 · 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

Duplicate object keys shouldn't result in an ArgumentException

area-System.Text.Jsonbughelp wanted

dotnet/runtime #71,784 opened Jul 7, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

9 comments7 reactions0 assignees

Open

JIT: Reloc is not used in Tier1 for this simple snippet

area-CodeGen-coreclrhelp wantedtenet-performance

dotnet/runtime #71,545 opened Jul 1, 2022 · 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

[API Proposal]: SequenceReader<T>.TryAdvanceTo(ReadOnlySpan<T> delimiter)

api-approvedarea-System.Buffershelp wantedin-pr

dotnet/runtime #71,471 opened Jun 30, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

3 comments8 reactions0 assignees

Open

Enhance the NTLM negotiation testing on Linux/macOS

area-System.Net.Securityhelp wantedtest-enhancement

dotnet/runtime #71,427 opened Jun 29, 2022 · 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

Support implicit TLS for SMTP client

area-System.Net.Securityenhancementhelp wanted

dotnet/runtime #71,304 opened Jun 26, 2022 · 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

[Analyzer/fixer suggestion]: Exceptions thrown inside async methods should be wrapped by Task.FromException

api-approvedarea-System.Threading.Taskscode-analyzercode-fixerhelp wanted

dotnet/runtime #70,905 opened Jun 17, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

7 comments2 reactions0 assignees

Open

JsonSerializer does not support parsing DateTime value '0001-01-01T00:00:00+01:00'

area-System.Text.Jsonenhancementhelp wanted

dotnet/runtime #70,547 opened Jun 10, 2022 · 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

Double.ToString with two section separators and negative zero placing additional negative sign in output

area-System.Numericsbughelp wanted

dotnet/runtime #70,460 opened Jun 8, 2022 · C# · 17,886 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

7 comments2 reactions1 assignee

Open

`ConsoleStream.ReadByte` throws when `Console.Encoding` is UTF-16

area-System.Consolehelp wanted

dotnet/runtime #70,448 opened Jun 8, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

6 comments1 reaction0 assignees

Open

Reconsider the exception type thrown when trying to open a directory as file

area-System.IOhelp wanted

dotnet/runtime #70,275 opened Jun 6, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

6 comments0 reactions0 assignees

Open

Analyzer for cases when the `Dispose()` pattern is introduced after the fact

api-approvedarea-System.Runtimecode-analyzercode-fixerhelp wanted

dotnet/runtime #70,188 opened Jun 3, 2022 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

3 comments1 reaction0 assignees

Open

Review and update `ryujit-tutorial.md`

area-CodeGen-coreclrhelp wanted

dotnet/runtime #69,988 opened May 30, 2022 · C# · 17,886 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

2 comments0 reactions1 assignee

dotnet/runtime

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