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2026-05-16 errors dotnet dotnet-11

Fix: Unable to find a valid iOS Simulator runtime during MAUI build

Xcode 15+ ships without bundled iOS simulator runtimes. MAUI fails the build when SupportedOSPlatformVersion has no matching runtime installed. Install one with xcodebuild -downloadPlatform iOS or via Xcode Settings, then verify with xcrun simctl list runtimes.

2026-05-16 flutter dart swiftpm

Flutter 3.44 Splits Material and Cupertino Out of the SDK and Defaults to SwiftPM

Flutter 3.44 stable freezes Material and Cupertino inside the SDK and points new work at the material_ui and cupertino_ui packages on pub.dev. SwiftPM also becomes the default for iOS and macOS, finally retiring CocoaPods.

2026-05-15 dotnet dotnet-11 csharp

.NET 11 Adds Deadlock-Free Process Output Capture

.NET 11 Preview 4 ships new System.Diagnostics.Process APIs that drain stdout and stderr concurrently, plus one-line run-and-capture helpers and KillOnParentExit.

2026-05-15 errors dotnet dotnet-11

Fix: Gradle build failed to produce an .apk file in MAUI Android

Nine out of ten times the real Gradle error is buried higher in the MSBuild log. JDK 17 path, missing maui-android workload, and Windows long paths are the usual root causes.

2026-05-15 mcp claude-code ai-agents

Fix: MCP Server stdio Hang When Launched From Claude Code

Why your Model Context Protocol server gets stuck in 'connecting' from Claude Code 2.x and never registers any tools. Covers stdout pollution, the npx install prompt, MCP_TIMEOUT, buffered output, and WSL pitfalls, with verifiable repros.

2026-05-14 errors csharp dotnet

Fix: A possible object cycle was detected

System.Text.Json refuses to serialize graphs with back-references. Set ReferenceHandler.IgnoreCycles, project to a DTO, or mark the back-pointer with [JsonIgnore]. Preserve is a last resort.

2026-05-14 errors csharp dotnet

Fix: SqlException: Timeout expired during EF Core migrations

Migrations use the design-time DbContext, not your runtime CommandTimeout. Set the timeout via UseSqlServer(o => o.CommandTimeout(...)), the connection string Command Timeout, or Database.SetCommandTimeout before Migrate().

2026-05-14 claude-code mcp ai-agents

How to Add Retrieval-Augmented Generation to a Claude Code Session

A 2026 walkthrough for wiring RAG into Claude Code 2.1.x: when agentic grep stops scaling, how to attach a hybrid BM25 + dense vector MCP server, how to wrap a retrieval CLI in a custom skill, and how Anthropic's contextual embeddings technique pushes recall above 92%. Anchored to claude-sonnet-4-6, claude-opus-4-7, and Claude Context 0.x.

2026-05-14 dotnet-11 maui coreclr

MAUI switches to CoreCLR by default on Android, iOS, and Mac Catalyst in .NET 11 Preview 4

.NET 11 Preview 4 makes CoreCLR the default runtime for MAUI on Android, iOS, Mac Catalyst, and tvOS. Mono is still one MSBuild property away. Here is what changes, what breaks, and how to opt out.

2026-05-13 dotnet-11 maui dotnet-watch

dotnet watch finally reaches MAUI on Android and iOS in .NET 11 Preview 4

.NET 11 Preview 4 turns on dotnet watch for Android devices, Android emulators, and the iOS Simulator. Edit, save, and the running app updates without a manual rebuild. One csproj gotcha applies to iOS.