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clr-activation-debugging

Analyze CLRLoad logs to diagnose CLR activation failures.

2|Updated Mar 17, 2026
Search Tags:#debugging#logs#diagnostics#activation#dotnet#clr
One-click install
npx skills add https://github.com/sayedihashimi/copilot-skill-eval --skill clr-activation-debugging-sayedihashimi
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: clr-activation-debugging
Source: https://github.com/sayedihashimi/copilot-skill-eval/tree/main/examples/aspnet-razor-pages/plugins/dotnet-skills/dotnet-diag/skills/clr-activation-debugging
Command: npx skills add https://github.com/sayedihashimi/copilot-skill-eval --skill clr-activation-debugging-sayedihashimi

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Diagnoses .NET CLR activation issues by analyzing CLRLoad logs (CLRLoad logs) produced by mscoree.dll, helping you pinpoint misloaded runtimes and activation failures.

Core Features & Use Cases

  • Diagnostic analysis of CLR activation scenarios, including wrong runtime selection, missing CLR activation, and FOD prompts
  • Interprets CLRLoad logs to guide remediation for both legacy and modern hosting paths
  • Useful for developers and IT professionals troubleshooting .NET activation in Windows environments

Quick Start

Run the CLR activation diagnostic against your CLRLoad logs to identify the root cause of activation failures.

Frequently Asked Questions about clr-activation-debugging

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I diagnose .NET CLR activation issues from CLRLoad logs?▼

Diagnose .NET CLR activation issues by analyzing CLRLoad logs produced by mscoree.dll to pinpoint misloaded runtimes and identify the root cause of activation failures.

Why does my .NET application load the wrong CLR runtime version?▼

Wrong CLR runtime selection occurs from mismatched runtimes or config interactions. Analyzing CLRLoad logs identifies whether legacy or metahost paths caused the incorrect runtime load.

How do I interpret CLRLoad logs for mixed CLR v2 and v4 COM activations?▼

Interpret CLRLoad logs by evaluating inputs, config interactions, and activation outcomes to detect mixed CLR loads across COM and managed activations, guiding remediation for both legacy and modern hosting paths.

Can I use CLRLoad logs to troubleshoot missing CLR activation and FOD prompts?▼

Yes, CLRLoad logs diagnose missing CLR activation scenarios and Feature on Demand prompts by tracing runtime selection failures within mscoree.dll to guide Windows environment remediation.

What is the best way to troubleshoot .NET runtime selection failures in Windows?▼

The best way to troubleshoot .NET runtime selection failures is running diagnostic analysis against CLRLoad logs to evaluate legacy versus metahost paths and identify mismatched runtime loads.

Do I need CLRLoad logs to debug .NET CLR activation failures?▼

Yes, CLRLoad logs generated by mscoree.dll are required to debug .NET CLR activation failures, providing the runtime selection traces needed to identify mismatched loads and config interactions.

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