Repository Issues

dotnet/runtime

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

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Stars
 (17,886 stars)
Forks
 (5,445 forks)
Indexed issues
 (385 indexed issues)
open beginner issues
 (354 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

385 indexed issues

Closed
Optimization of modulo 7 in `DateTime.DayOfWeek`
area-System.DateTimehelp wantedtenet-performance
Why recommendedHas a beginner-friendly label · Contributing guide available
Has a beginner-friendly labelContributing guide available

dotnet / runtime · #115279 · May 4, 2025 · C# · 17,886 stars

20 comments6 reactions1 assignee
Open
HttpClientFactory doesn't clean up after itself
area-Extensions-HttpClientFactoryhelp wanted
Why recommendedHas a beginner-friendly label · Contributing guide available
Has a beginner-friendly labelContributing guide available

dotnet / runtime · #113494 · Mar 13, 2025 · C# · 17,886 stars

15 comments4 reactions1 assignee
Open
SerialPort constantly throws IOException
area-System.IO.Portshelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / runtime · #113296 · Mar 8, 2025 · C# · 17,886 stars

14 comments3 reactions0 assignees
Open
Suspicious code fragments in System.Text.Json
area-Debugger-monohelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / runtime · #112344 · Feb 10, 2025 · C# · 17,886 stars

7 comments0 reactions0 assignees
Open
Constant mod over chars can use a cheaper FastMod
area-CodeGen-coreclrhelp wantedin-pr
Why recommendedHas a beginner-friendly label · Contributing guide available
Has a beginner-friendly labelContributing guide available

dotnet / runtime · #111492 · Jan 16, 2025 · C# · 17,886 stars

1 comment4 reactions1 assignee
Open
Extra calls in Asm
area-CodeGen-coreclrhelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / runtime · #109688 · Nov 10, 2024 · C# · 17,886 stars

8 comments0 reactions0 assignees