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I've got an app in the Windows Store, can't update screenshots

Wavesonics 0 Reputation points
2026-05-23T08:42:28.73+00:00

Just as it says, the app is already live, I try to update the screen shots, they are the right size, format, everything the docs say, and it still just fails when I hit "Save" and I get an error at the top:

We are unable to save listing. Please reload the page or try again later

I look in my logs, and the actual request to save 400s:

{"message":"BadRequest","correlationId":"fb759384-6297-48fd-84e9-00d01d0b085c"}

Microsoft Partner Center | Other
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  1. AI answer

    2026-05-23T08:42:41.3433333+00:00

    The error is not caused by the screenshot file format or size alone; it is a generic listing‑save failure. Screenshots themselves only have a few enforced rules, and if those are met, a 400 on save usually indicates a transient Partner Center or listing‑data issue rather than the image files.

    Key points to verify for screenshots and listing data:

    1. Screenshot requirements
      • File type must be .png.
      • Orientation must be landscape or portrait.
      • File size must be under 50 MB.
      • For desktop screenshots, minimum size is 1366 × 768; 4K (3840 × 2160) is supported.
      • For Xbox screenshots, size must be between 1920 × 1080 and 3840 × 2160.
      • Do not upload screenshots for device families the app does not support.
      • Maximum counts per device family (depending on package type):
        • PWA/MSIX: up to 10 desktop screenshots and up to 8 for other device families.
        • MSI/EXE: maximum 10 screenshots total.
    2. Listing‑page constraints that can also block saving
      • At least one screenshot is required for submission; if all screenshots for all device families are removed, the listing cannot be saved.
      • Product features must each be ≤ 200 characters, with at most 20 features.
      • “What’s new” / release‑notes fields have a 1500‑character limit.
      • If multiple languages are configured, each language’s Store listing page must satisfy its own required fields (including at least one screenshot) before the listing can be saved.
    3. Device‑family targeting
      • If screenshots are being added for a device family that the app does not actually support, remove those and only keep screenshots for supported device families.
      • For PWAs/MSIX, desktop screenshots are also shown on Surface Hub; ensure they meet the desktop requirements.
    4. Store logos and optional assets
      • For apps that support Xbox, some Store logo images become required; missing required Xbox images can cause listing‑save failures even if screenshots are valid.
      • If “only images you upload here should be used” is enabled for logos, ensure at least the required logo images are present.
    5. Practical remediation steps
      1. On the Store listing page for the affected language, verify:
        • At least one valid .png screenshot is present and within the allowed size and resolution ranges.
        • Screenshot counts do not exceed the per‑family maximums.
        • No screenshots are assigned to unsupported device families.
      2. Check all text fields on that page:
        • Trim any feature text over 200 characters.
        • Ensure there are no more than 20 features.
        • Ensure “What’s new” (if present) is ≤ 1500 characters.
      3. If the app targets Xbox:
        • Confirm required Xbox images and, for games with trailers, the 16:9 Super hero art (1920 × 1080 or 3840 × 2160, .png, no text) are provided.
      4. If multiple languages are configured:
        • Open each language’s Store listing and confirm the same constraints (especially at least one screenshot per language) before saving.
      5. After correcting any violations, reload Partner Center and try saving again.

    If all of the above are satisfied and the 400 persists, the issue is likely on the Partner Center side rather than with the screenshots themselves; in that case, open a support ticket through Partner Center and include the correlationId from the 400 response.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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