.NET October 2025 Updates
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Description
On October 14, 2025, we released .NET 9.0.10, .NET 8.0.21 updates.
## Release Notes
* [.NET October 2025 Update - .NET 9.0.10 and .NET 8.0.21](https://github.com/dotnet/core/issues/10120)
* [.NET 8.0.21 and .NET SDK 8.0.415](https://github.com/dotnet/core/blob/main/release-notes/8.0/8.0.21/8.0.21.md) ([Download](https://dotnet.microsoft.com/download/dotnet-core/8.0))
* [.NET 9.0.10 and .NET SDK 9.0.306](https://github.com/dotnet/core/blob/main/release-notes/9.0/9.0.10/9.0.10.md) ([Download](https://dotnet.microsoft.com/download/dotnet-core/9.0))
Also announced at [.NET Updates in October 2025](https://devblogs.microsoft.com/dotnet/dotnet-and-dotnet-framework-october-2025-servicing-updates/).
Contributor guide
No contributing guide indexed for this repository
Research direction
Start with the announcement text and follow the linked .NET 8.0.21 and 9.0.10 release notes, downloads, and blog post. The payload does not identify a file to edit or a specific missing change, so confirm the intended documentation update before beginning; done would mean the announcement accurately reflects the October 2025 releases.
Written by the indexing model from the issue text.
Assessment
- Domain
- documentation, release
- Issue type
- Documentation
- Difficulty
- 1/5
- Estimated time
- Under an hour
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 20/100