# Syncfusion Aspnetmvc License

> **LICENSE REGISTRATION GUIDE** — Assist with Syncfusion ASP.NET MVC EJ2 license key generation, registration in Global.asax.cs, troubleshooting, and error resolution. Use when: registering license keys, handling licensing errors, upgrading from trial to paid, generating platform-specific keys, or securing keys in production.

- Skill: `syncfusion/syncfusion-aspnetmvc-license` (Agent Skill, multi-file: 3 files)
- Install (CLI): `npx skillmds@latest add syncfusion/syncfusion-aspnetmvc-license`
- Raw SKILL.md: https://api.skillmd.com/api/skills/syncfusion/syncfusion-aspnetmvc-license/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: syncfusion (https://skillmd.com/u/syncfusion)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/syncfusion/syncfusion-aspnetmvc-license

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# Syncfusion ASP.NET MVC — License Registration

Concise guidance for license generation, registration, and best practices for ASP.NET MVC applications. Detailed troubleshooting steps, secure storage patterns, and code examples live in references.

## When to Use
- Registering or updating Syncfusion license keys for ASP.NET MVC EJ2
- Troubleshooting license validation, version, or platform mismatches
- Configuring license registration for build servers and CI/CD pipelines
- Securing license keys in production environments
- Upgrading from trial to production licenses

## Key Points for ASP.NET MVC

### License Registration Location
- **File**: `Global.asax.cs` or `Global.asax.vb`
- **Method**: `Application_Start()`
- **Timing**: Must execute BEFORE any Syncfusion control initialization

### Platform-Specific Requirements
- **Package**: License key must match `Syncfusion.EJ2.MVC5` version
- **Licensing NuGet**: Ensure `Syncfusion.Licensing` NuGet is installed and matches Syncfusion package version
- **No Web.config**: License is NOT stored in Web.config; register programmatically only

## Quick Checklist
✓ Generate license key for correct Syncfusion version and ASP.NET MVC platform  
✓ Register key in Global.asax Application_Start() method BEFORE control use  
✓ Ensure `Syncfusion.Licensing` NuGet package version matches Syncfusion EJ2 version  
✓ Store keys securely: Use environment variables, Azure Key Vault, or encrypted config  
✓ Never commit license keys to source control  
✓ Test license registration early in development  
✓ Have fallback license strategy for build/CI environments  

## Security Best Practices
- Use environment variables: `Environment.GetEnvironmentVariable("SYNCFUSION_LICENSE")`
- For Azure: Store in Azure Key Vault and retrieve via managed identity
- For on-premises: Use encrypted configuration sections or secure vaults
- Rotate licenses before expiration; implement monitoring
- Document license scope (developer, production, trial) per environment

## References
- License generation & claiming: [references/syncfusion-license-guide.md](references/syncfusion-license-guide.md)
- Registration & troubleshooting: [references/syncfusion-license-registration.md](references/syncfusion-license-registration.md)