Upgraded to .NET 10? Share Your Experience!

[khalidabuhakmeh]

Hello Duende Community,

We're always looking to keep our solutions modern and high-performing, and the recent release of .NET 10 is naturally a point of interest to everyone building on the .NET platform. Upgrading is always a significant undertaking, and hearing real-world feedback can make all the difference for those of us currently planning—or perhaps dreading—the transition.

For those of you who have already taken the leap and upgraded your existing applications, libraries, or services to .NET 10:

What has your experience been like so far?

We'd love to hear the details, whether they're positive, negative, or simply unexpected.

Share the Good

• What specific features or performance improvements have you noticed right away?
• Did the migration path feel smooth for your particular project type (e.g., ASP.NET Core, Blazor, WinForms)?
• Were there any new tooling enhancements that significantly sped up your development or deployment cycle?

Share the Bad

• What were the most challenging breaking changes or compatibility issues you encountered?
• Did you run into any dependency hell or issues with third-party libraries?
• Were there any regressions in performance or stability for specific parts of your application?

Share the Unexpected

• Did any part of the upgrade take significantly more or less time than you budgeted?
• Were there any "hidden" configuration changes or environmental requirements that caught you off guard?

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🚀 Let's start the conversation! Please reply below and detail your .NET 10 upgrade journey. Include the type of solution you upgraded (e.g., Microservice, Monolith, Desktop App) and the framework version you upgraded from if possible. Your insights are invaluable to the community!

[Scooletz]

1. I think I encountered an issue with an exception handling. I'm working on a minimal repro to share with the team.
2. Async emitted in JIT made my IL code so slim that I have it in Async Reloaded presentation as an example.
3. The inlining gets so ridiculously good that you need to rebench everything 😂