Nico Vermeir

Microsoft Build, June 2-3, 2026 / San Francisco and online Go deep on real code and real systems with the teams building and scaling AI at Microsoft Build, June 2–3, 2026, in San Francisco and online.

The registration site for Microsoft Build is now live and it uses Cascadia Code EVERYWHERE ❤️‍🔥❤️‍🔥❤️‍🔥

(Cascadia Code is the new font we built for Windows Terminal ✨)

build.microsoft.com/home

Now Shipping: Microsoft Build

Two days of real code, real systems, and real workflows for developers building and scaling AI.

June 2–3, 2026 / San Francisco

Registration is now open: msft.it/63324QemVQ

submitted!

Livestream: Are your access tokens really secure? Are your APIs vulnerable? Explore JWT pitfalls, learn to prevent exploits, and compare JWTs vs. opaque tokens in this expert-led session.

Tomorrow! Join our livestream on March 3rd.

Stop relying on manual checks. We’re showing you how to automate your security testing to ensure your API only accepts your trusted tokens.

🔗 March 3rd. Be there: duende.link/lsjwt26b

#OAuth2 #JWT #DotNet

Wait... CSS Can Do That?

Aspire Conf Save the Date poster - March 23, 9:00 PST. Learn how Aspire can transform the way you build and deploy your distributed apps and agents. Free, livestream event on YouTube & Twitch

📣 It's happening! 📣 Come meet the new Aspire at #AspireConf on March 23. Join our livestream at 9am PT for a packed day of sessions for all developers, no matter your skill, language, or stack.

Save the date: aspire.dev/aspireconf?c...

#Python #TypeScript #JavaScript #dotnet #AI #AspireDev

Migrate your Semantic Kernel and AutoGen projects to Microsoft Agent Framework Release Candidate | Semantic Kernel Microsoft Agent Framework has reached Release Candidate for .NET and Python. The API surface is stable, v1.0 features are complete, and now’s the time to migrate from Semantic Kernel and share…

Migrate your Semantic Kernel and AutoGen projects to Microsoft Agent Framework Release Candidate

buff.ly/o1CmeNo

#agentframework #dotnet #python #autogen #semantickernel #foundry #ai #agents

Aspire 💫 (@aspire.dev) 📣 It's happening! 📣 Come meet the new Aspire at #AspireConf on March 23. Join our livestream at 9am PT for a packed day of sessions for all developers, no matter your skill, language, or stack.…

buff.ly/mu2uWtY

Livestream: Are your access tokens really secure? Are your APIs vulnerable? Explore JWT pitfalls, learn to prevent exploits, and compare JWTs vs. opaque tokens in this expert-led session.

JWTs are the industry standard, but are they right for your specific architecture?

We’re breaking down the strategic trade-offs between JWTs vs. Opaque Tokens.

🔗 March 3rd. Be there: duende.link/lsjwt26b

#OAuth2 #JWT #DotNet

Looks like I'll be back in Copenhagen soon!

Securing Aspire Apps with Microsoft Entra ID Secure Aspire apps with Entra ID authentication SDKs. automate with AI Agent skills. A video shows how to start. Try and learn how this works

Securing Aspire Apps with Microsoft Entra ID

Massive milestone achieved!

Avalonia has just hit 30,000 stars on GitHub! ⭐

A massive shoutout to our incredible community!
Your passion powers the ultimate cross-platform UI framework for .NET.

Livestream: Are your access tokens really secure? Are your APIs vulnerable? Explore JWT pitfalls, learn to prevent exploits, and compare JWTs vs. opaque tokens in this expert-led session.

Security you can’t prove isn’t security, it’s hope.

Stop relying on manual checks. We’re showing you how to automate your security testing to ensure your API only accepts your trusted tokens.

🔗 March 3rd. Be there: duende.link/lsjwt26b

#OAuth2 #JWT #DotNet

KCDC 2026: Call for Speakers Do you have great ideas or unique experiences that you want to share? If you do, then we want to hear from you!The Kansas City Developer Conference lo...

AND WE'RE OFFICIALLY BACK! 🎉 The CFP for our 2026 Event is now open. Join us Sept 9th through Sept 11th in downtown KC for our best event yet:

sessionize.com/kcdc-...

#kcdc2026 #kcdc

Upgrade to Duende IdentityServer & .NET 10 Learn why upgrading to Duende IdentityServer on .NET 10 is the smartest move for your 2026 roadmap. Join our open session on security and stability.

Join our livestream in 1 HOUR! 📣

Upgrading infrastructure is daunting. That's why today's session is casual & friendly. Let's weigh the trade-offs: legacy systems vs. a modern SDK on #dotnet 10.

Bring your questions, we’ll bring the insights. 👇

Join us live: duendesoftware.com/webinars/why...

Starting a new blog series on embedded development with .NET: xaml.dev/post/new-ser... #xaml #uno #winui #dotnet #iot

Backend for Frontend (BFF) Security Framework Securing SPAs and Blazor WASM Applications once and for all.

Duende BFF v4 delivers native multi-frontend support! 🛑

The days of deploying 10 BFFs for 10 SPAs are over. Consolidate security, cut operational sprawl, and unify identity for all your browser apps in one place. One host, many frontends. Finally. ✨

duende.link/yjznoj5

#Duende #BFFv4

I join and you leave? I'll try not to take it personally 😂
Have fun at the new gig! Hopefully we can still run into each other at some conference

Feedback on Visual Studio matters more than you think 💬
See where it goes and why it matters 🔍
aka.ms/VS/DevFeedback

Duende Product Insiders We invite you to join a deeply technical, standards-driven community to help shape the future of .NET security and identity.

As a Duende Product Insider, your team directly influences IdentityServer/BFF evolution. Contribute real-world use cases & feedback to shape a product meeting your complex enterprise security requirements.

Invest in a platform you help define.

➡️ duende.link/insiders

On 9 January 2026 mine and my family's lives changed forever.
I tell the full story in this video: youtu.be/mNEPSWcOheY

If you want to support my family as well as our local community, consider sharing this post, or donating here: www.gofundme.com/f/we-lost-al...

🧵 FAQ:

Q: What even is this?
This account tracks the live level of the urine tank on the International Space Station.

Q: So it's, like, real? Live? Right now?
Yes.

.NET Rocks! .NET Rocks! is a weekly talk show for anyone interested in programming on the Microsoft .NET platform. The shows range from introductory information to hardcore geekiness.

What's happening with Uno now that .NET 10 is released?

@jlaban.bsky.social and @samidip.bsky.social talk on .NET Rocks at www.dotnetrocks.com/details/1984 about the latest developments in Uno, including the collaboration with Microsoft on MAUI, WASM, and more!

XAML Studio is now Open Sourced - #ifdef Windows XAML Studio is now open sourced! It's a WinUI developer tool for rapid prototyping with XAML before integrating in a Visual Studio project.

🦙📢 It's been an amazing celebration of #XAMLStudio v2 these last couple of weeks. 🎊 And so #WindowsDev to culminate it all, I'd like to announce that the project is now open-sourced! A seed project in the @dotnetfdn 🎉 Read all about this journey here: devblogs.microsoft.com/ifdef-window...

After 19 years it was time for a new challenge. I've joined Microsoft as a Cloud Solution Architect. That means I'm no longer an MVP, which I'll definitely miss, but I will for sure keep doing what I'm doing for the community.

Here's to new opportunities! 🍻

🎉 Happy New Year, VISUG folks!
To start 2026, we’re launching our new website 🚀 www.visug.be

We teased it before: 2026 is a special year for us as VISUG turns 20! This new site is only the beginning 👀

#VISUG #dotnet #community

Secure frontend apps with the BFF Pattern Secure frontend apps with the Backend for Frontend (BFF) pattern. Simplify token management and boost security using Duende BFF v4, with multi-frontend support.

BFF v4: You can't secure what you can't see.

OpenTelemetry is baked right in for end-to-end observability of your auth journey (redirect, token exchange, API calls).

duende.link/bff4b1b

#OpenTelemetry #Observability #DuendeBFF #Diagnostics #Tracing

.NET Rocks! .NET Rocks! is a weekly talk show for anyone interested in programming on the Microsoft .NET platform. The shows range from introductory information to hardcore geekiness.

Merry Christmas! Time for a Space Geek Out!

All the cool stuff that has happened in space in the past year, with some view to what is coming next - and there's a lot!

Listen on .NET Rocks at www.dotnetrocks.com/details/1982

Sign the Petition Bring Back Windows Phone

Change dot org petition seeks to revive Windows Phone, and dozens are signing up! (including me ... ) — "Third time's a charm."

buff.ly/i4TUGRw

#windowsphone #windows #changedotorg #mobiledev

That was my final working day at Inetum yesterday. After 19 years with my first employer it's time for something new. New gig is starting on January 5th. Very excited to meet my new team and get started!