Migrates Global.asax application lifecycle events to ASP.NET Core middleware, startup configuration, and Program.cs. Use when upgrading ASP.NET Framework apps containing Global.asax or Global.asax.cs files.
Install
npx skills add microsoft/upgrade-agent-plugins --skill migrating-global-asaxnpx skills add microsoft/upgrade-agent-plugins --skill migrating-global-asax -a claude-code -gnpx skills add microsoft/upgrade-agent-plugins --skill migrating-global-asax -a codex -ggemini skills install https://github.com/microsoft/upgrade-agent-plugins.git --path plugins/upgrade-agent/upgrade/dotnet/skills/lazy/web/aspnet/migrating-global-asaxgh skill install microsoft/upgrade-agent-plugins migrating-global-asaxgit clone --depth 1 https://github.com/microsoft/upgrade-agent-plugins /tmp/microsoft__upgrade-agent-plugins
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/microsoft__upgrade-agent-plugins/plugins/upgrade-agent/upgrade/dotnet/skills/lazy/web/aspnet/migrating-global-asax ~/.claude/skills/migrating-global-asax # Claude Code
cp -R /tmp/microsoft__upgrade-agent-plugins/plugins/upgrade-agent/upgrade/dotnet/skills/lazy/web/aspnet/migrating-global-asax ~/.agents/skills/migrating-global-asax # Codex, Cursor, Gemini CLI, Copilot, OpenCode