Microsoft Store: Tengo una aplicación Liberada en Microsoft Store y no me deja subir un video promocional

Trailer upload and configuration in Partner Center is controlled by the Store listing submission, not by a separate “enablement” on the account. The behavior described (only being able to upload the video and not seeing all fields, or seeing a read‑only listing) is consistent with working in a live/read‑only submission instead of creating a new submission and editing the Store listing there.

To add a trailer with all required fields, the process must follow these constraints from the Store listing system:

1. Work in an editable submission
   • Open the app in Partner Center → Apps and games → select the app.
   • In Product release, create a new submission (for example, Update your product or similar) so that Store listings is editable. The current live submission (Store presence) is read‑only and will not allow changes.
2. Use the Trailers and additional assets section correctly
   • In the new submission, go to Store listings → select the language → Trailers and additional assets.
   • Use Upload to add a trailer. For each trailer, all of the following must be provided before the submission can proceed:
     • Video file: .mp4 or .mov, 1920×1080 resolution, within the size limits (up to 2 GB for PWA/MSIX guidance; up to 10 GB for general game publishing guidance).
     • Thumbnail: .png, 1920×1080 pixels.
     • Title: up to 255 characters.
     • Optional but supported: Closed captions (.vtt, < 50 MB) and Audio descriptions (.mp3, < 500 MB).
   • If only the video is uploaded and the thumbnail/title are missing, the UI will not consider the trailer complete and the submission cannot be finished.
3. Respect trailer limits and requirements
   • A product can have up to 15 trailers (30 for some PWA scenarios).
   • Duration must be under 30 minutes.
   • Do not include age ratings, IARC rating info, controller button glyphs, platform branding, or references to competing platforms in the trailer body.
   • For games, provide a 16:9 Super hero art image (1920×1080 or 3840×2160 .png) so that trailers can appear at the top of the Store listing.
4. Retail vs. sandbox behavior
   • Videos/trailers are only shown to customers for Retail submissions. Dev sandbox submissions do not display videos in the Microsoft Store.
   • If sandboxes are used, trailers must be uploaded to the RETAIL sandbox to appear on the public Store listing.

If, after creating a new submission and following these steps, the trailer pane still remains partially disabled or blocks progress, the remaining path is assisted support from Partner Center (App submission and certification → Submitting an app), as the platform must ensure the account and submission are in a healthy state before trailers can be fully edited.

References:

• Store listings
• Add app screenshots, images, and trailers for PWAs
• Add app screenshots, images, and trailers for MSIX apps
• Add and edit Store listing info
• Microsoft Store submission API for MSI or EXE app