.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.
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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.
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.
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.
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().
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.
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.
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.
Fix: System.Text.Json.JsonException: The JSON value could not be converted
System.Text.Json throws this when the incoming JSON token doesn't match the CLR target type. Match the JSON to the type, or register a JsonConverter or JsonSerializerOption that bridges them.
Fix: System.Security.Cryptography.CryptographicException: Keyset does not exist
The certificate's private key lives in a separate Windows key file the current process identity cannot read. Grant ACL on the key, load the PFX with MachineKeySet, or use EphemeralKeySet.