Sign an existing .msix or .exe and manage code-signing certificates: winapp sign, cert generate/install/info, Azure Trusted Signing. Use when signing with a .pfx, creating or trusting a dev certificate, verifying a signature, or fixing a publisher mismatch. Not for building the MSIX.
Install
npx skills add microsoft/winappCli --skill winapp-signingnpx skills add microsoft/winappCli --skill winapp-signing -a claude-code -gnpx skills add microsoft/winappCli --skill winapp-signing -a codex -ggemini skills install https://github.com/microsoft/winappCli.git --path plugins/winapp/skills/winapp-signinggh skill install microsoft/winappCli winapp-signinggit clone --depth 1 https://github.com/microsoft/winappCli /tmp/microsoft__winappCli
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/microsoft__winappCli/plugins/winapp/skills/winapp-signing ~/.claude/skills/winapp-signing # Claude Code
cp -R /tmp/microsoft__winappCli/plugins/winapp/skills/winapp-signing ~/.agents/skills/winapp-signing # Codex, Cursor, Gemini CLI, Copilot, OpenCode