Visual Studio Debugger

Here's how to profile unit tests in Visual Studio and have Copilot help optimize your code youtu.be/9zcg206kEoI?si…

Working with Copilot for debugging and profiling is now much easier with dedicated agents. Just select the Debugger or Profiler Agent to get all the context-aware help you need to diagnose and optimize your application instantly.

Got a slow LINQ query? Now you can catch it and fix it while debugging. Perf Tips + Profiler Agent in Visual Studio surface real runtime data as you step, and GitHub Copilot helps you optimize instantly. Currently supported in C# .NET. #VS2026 Insiders

A super easy way for me to optimize performance of my .NET application using my existing unit tests, the built-in profiler, and Copilot to tie it all together into a single click of a button. Coming to Visual Studio 2026 very soon...

You'll soon be able to run the Visual Studio profiler agent against your unit tests. I'm very excited for this feature

@mkristensen @wstaelens Unfortunately, the Text Visualizer doesn't currently support strings with embedded null characters (\0) in the middle it essentially stops rendering at the first one.

@wstaelens @VS_Debugger

@mkristensen text visualiser shows "\0\0..." over my "ref allText" parameter but in the dialog (when clicking View) nothing to see or to select... any improvement to make here? #VS2026

What features or extensions make you jump from Visual Studio to other IDEs and editors to perform certain tasks?

Ever stared at a call stack thinking “okay… but why?” Analyze Call Stack with Copilot is coming soon bringing instant clarity to sync & async debugging.

Finding the real issue often means tracing deep call chains. From Live! 360 Orlando, see how GitHub Copilot analyzes context, builds hypotheses, and helps uncover root causes 🧩 Watch to learn more: youtu.be/iFjQghRbJUw

📁 Quick Add Files 🖼️ File Explorer Image Optimizer ⌨️ A Keyboard Hero to streamline navigation and improve code quality In this #VSLive! 360 session replay, we get a wide collection of practical Visual Studio features and workflows that can make everyday development smoother, faster, and more enjoyable. 🎥 msft.it/6011tfhfW

@mkristensen @johnzabroski @HarshadaHC looks like you have some 3rd-party extensions installed, and we can see inline variables coming from it. We suspect this may be specific to your setup, as we haven’t received any other reports of this issue. Could you please file a feedback ticket so we can take a closer look?

@johnzabroski @HarshadaHC @VS_Debugger

@mkristensen We have noticed that since Visual Studio 17.14.21 or 22, data tips no longer really work. It doesn't depend on whether I have "Keep expanded data tips open until clicked away" or "Enable property evaluation and other implicit function calls" is enabled/disabled.

@Sam75614812 @mkristensen The profiler agent can help here too. Even if you don’t know anything about benchmarking, that’s completely fine. It can automatically add a new benchmark suite and generate benchmarks for you if your project doesn’t already have them. See this example youtu.be/u8kPpwvI1AI?si…

@mkristensen Could you make a YouTube video showing this process? I’d like to see it in practice on real code. I’m not even sure how you to even begin to benchmark UI code like you’re doing.

I’ve been having a blast adding benchmarks to my Visual Studio extensions and letting the Profiler Agent work its magic. The optimizations are incredible. Stuff I’d never pull off on my own. It often boosts performance by 5x and slashes allocations.

Debugging, minus the drama. In #VisualStudio2026, #Copilot helps with exception insights from your repo, honest inline values, and condition analysis that shows exactly what failed—so you move faster when tests flake. Get details, real examples, and quick walkthroughs: msft.it/6011tmf4W

Debug smarter with GitHub Copilot in Visual Studio! Learn AI-powered breakpoints & deadlock detection in this Live360 session: msft.it/6015tc7tL #VisualStudio

@mkristensen @MichaelJAkin @timheuer Sorry you had to downgrade, that’s frustrating. What wasn’t working when you tried to debug your Blazor app? We’d like to get this fixed.

@MichaelJAkin Yikes! Let's add @VS_Debugger and @timheuer

We’ve been dogfooding the Profiler Agent in Visual Studio, and today it shaved off 800K allocations during VS startup, saving about 50MB of heap right out of the gate.

@DevLeaderCa We’re really sorry to hear that Copilot Profiler agent did not work for you. We’d love to understand more about what happened so we can help and improve. Could you please provide more details about the issues you encountered?

Copilot Profiler agent has been gaslighting me for ~3 hours now and I'm ready to never use Copilot again

#dotNETConf session replay: Visual Studio Debugger Go beyond basic breakpoints with advanced techniques: ✅ Conditional breakpoints ✅ Tracepoints & data breakpoints ✅ AI-powered insights for faster issue detection Plus tips for async code, memory analysis, and mastering watch/immediate windows. 👉 Learn more: msft.it/6018tbLa2 #Debugging

See how the Profiler Agent helped track down hidden bottlenecks in CsvHelper. It highlights real performance issues, breaks down the “why,” recommends optimizations, writes benchmarks, and validates your gains; all inside Visual Studio. devblogs.microsoft.com/visualstudio/d…

In this quick video, we take a walkthrough of the upgraded Exception Analysis experience in VS 2026, complete with: 🧠 deep-thinking mode ✏️ automatic edits 📊 model selection. Watch here ➡️ msft.it/6010tXyXe