Overview
MSOfficeAddin provides specialist Microsoft AppSource publishing services for Office add-in developers and ISVs who need to list their add-in on the Microsoft commercial marketplace. AppSource certification is complex, time-consuming, and frequently rejected on the first submission due to security requirements, manifest errors, and UX policy violations — we eliminate that friction.
**What AppSource publishing requires and why it fails:**
Microsoft's AppSource validation team reviews every submitted Office add-in against a detailed checklist covering: manifest schema compliance, HTTPS enforcement, authentication using Azure AD (no basic auth allowed), Fluent UI usage, accessibility (WCAG 2.1 AA), performance benchmarks, and content policy. Most first-time submissions fail on one or more of these points.
**Our AppSource publishing service includes:**
- **Pre-submission audit** — we review your complete add-in against the Microsoft AppSource validation requirements and identify every issue before submission
- **Manifest review and optimization** — validate and optimize your manifest.json (Unified manifest) or XML manifest for schema compliance and best-practice configuration
- **Code review for certification compliance** — identify security vulnerabilities, disallowed APIs, CSP violations, and authentication issues that cause rejection
- **Fluent UI compliance review** — ensure your task pane UI meets Microsoft's design requirements for a native Office experience
- **Accessibility audit** — WCAG 2.1 AA compliance check required for AppSource approval
- **Submission management** — we handle the Partner Center submission process, respond to validation feedback, and manage resubmissions
- **Post-approval support** — version updates, listing optimization, and ongoing compliance monitoring
**ISV and commercial add-in support:**
For software vendors building commercial Office add-ins, we also provide Microsoft Partner Center setup, transactable offer configuration, licensing integration, and SaaS subscription billing setup for AppSource commercial listings.
**What AppSource publishing requires and why it fails:**
Microsoft's AppSource validation team reviews every submitted Office add-in against a detailed checklist covering: manifest schema compliance, HTTPS enforcement, authentication using Azure AD (no basic auth allowed), Fluent UI usage, accessibility (WCAG 2.1 AA), performance benchmarks, and content policy. Most first-time submissions fail on one or more of these points.
**Our AppSource publishing service includes:**
- **Pre-submission audit** — we review your complete add-in against the Microsoft AppSource validation requirements and identify every issue before submission
- **Manifest review and optimization** — validate and optimize your manifest.json (Unified manifest) or XML manifest for schema compliance and best-practice configuration
- **Code review for certification compliance** — identify security vulnerabilities, disallowed APIs, CSP violations, and authentication issues that cause rejection
- **Fluent UI compliance review** — ensure your task pane UI meets Microsoft's design requirements for a native Office experience
- **Accessibility audit** — WCAG 2.1 AA compliance check required for AppSource approval
- **Submission management** — we handle the Partner Center submission process, respond to validation feedback, and manage resubmissions
- **Post-approval support** — version updates, listing optimization, and ongoing compliance monitoring
**ISV and commercial add-in support:**
For software vendors building commercial Office add-ins, we also provide Microsoft Partner Center setup, transactable offer configuration, licensing integration, and SaaS subscription billing setup for AppSource commercial listings.
Features
Pre-submission audit against full AppSource validation checklist
Manifest.json and XML manifest review and optimization
Security and authentication compliance review (Azure AD / MSAL)
Fluent UI and Microsoft design requirement compliance
WCAG 2.1 AA accessibility audit
Partner Center submission management and resubmission handling
Commercial SaaS offer and licensing configuration for ISVs
AppSource listing optimization for discoverability
Ongoing post-approval version update support