If Office came pre-installed on a new PC, the user must:
For larger enterprises, manual activation per user is inefficient. Consider these strategies: como activar office 365 para empresas
Businesses often face unique challenges. Here are the top issues and solutions: If Office came pre-installed on a new PC,
| Error Code / Message | Cause | Solution |
| :--- | :--- | :--- |
| "Product Deactivated" | License not assigned or user signed in with personal Microsoft account. | Verify license assignment in Admin Center. Ensure user logs in with @company.com account. |
| "Something went wrong [135011]" | Conditional Access policy blocking activation. | Whitelist office.com and login.microsoftonline.com in your firewall or VPN. |
| "You have been signed out" | License expired or subscription overdue. | Check billing status in Admin Center > Billing > Your products. |
| Activation Wizard loops | Corrupt credential cache. | Run Credential Manager > delete all "MicrosoftOffice" entries. Then restart Office. | | Verify license assignment in Admin Center
Para empresas con más de 50 equipos, use Office Deployment Tool (ODT) y activación por autenticación moderna.
Causa: Tiene instalada una versión perpetua (Office 2016/2019) e intenta activarla con una cuenta de Microsoft 365 Empresas. Solución: Desinstale completamente la versión antigua usando el Microsoft Support and Recovery Assistant (SaRA) y reinstale desde portal.office.com.