Walmart Marketplace has been highly reliable recently: StatusBird's independent monitoring recorded 100.0% availability and zero major incidents over the last 90 days.
Here is the full picture behind that verdict, and what an outage would mean for your store.
What is Walmart Marketplace?
Walmart Marketplace is Walmart's third-party seller program, letting e-commerce brands list products on walmart.com alongside Walmart's own inventory. Sellers manage listings, orders, pricing, and inventory through Seller Center and the Walmart Marketplace API, usually syncing with their main store via multichannel tools, and may use Walmart Fulfillment Services for logistics.
Walmart Marketplace uptime and outage history
| Metric (90 days, as of July 2026) | Value |
|---|---|
| Availability | 100.0% |
| Reliability grade | A+ |
| Major incidents | 0 |
| Total major-outage downtime | 0 minutes |
| Average incident duration | n/a |
| Most recent major incident | None in the last 90 days |
| Checks in window | 61,455 |
Among the 5 marketplace services StatusBird monitors, Walmart Marketplace ranks number 5 for 90-day availability. See the full ranking of marketplace tools by reliability.
What happens to your store when Walmart Marketplace goes down?
When Walmart Marketplace systems have problems, order downloads to your multichannel software stop, so new Walmart orders sit unacknowledged, which threatens the acknowledgment and shipping SLAs Walmart holds sellers to. Inventory and price sync failures can cause overselling of out-of-stock items or selling at stale prices. Seller Center may be unreachable, blocking manual order management, and API errors can pile up retries in your integration. If walmart.com itself is affected, your listings simply stop generating sales for the duration.
Typical symptoms during a Walmart Marketplace outage:
- New Walmart orders not appearing in your order management or ERP system
- Inventory and price updates failing or erroring via the Marketplace API
- Seller Center slow, erroring, or not loading at all
- API authentication or rate limit errors across all calls
- Listings showing stale stock levels or prices on walmart.com
If you are in the middle of an incident right now, see what to do when Walmart Marketplace goes down for a step-by-step playbook.
Frequently asked questions
Will Walmart penalize me for late shipments caused by their outage?
Walmart's seller performance standards still apply, but the company has processes for accounting for platform-side incidents. Keep timestamps and screenshots of the outage, ship affected orders as fast as possible, and open a case with Walmart seller support if metrics take a hit.
Are Walmart orders lost if my integration could not download them?
No. Orders placed by customers exist in Walmart's systems and remain visible in Seller Center and retrievable by API once things recover. The risk is not losing them but missing acknowledgment and shipping windows, so pull them manually if the outage drags on.
How this data is measured
StatusBird checks Walmart Marketplace's status every 2 minutes, around the clock, independently of the vendor. The availability figure counts major and critical outages only; minor degradation is excluded so numbers are not skewed by vendors that report small blips near-continuously. Grades run from A+ to F. See the live numbers on the Walmart Marketplace reliability page and current status on the Walmart Marketplace status page, or browse all 84 service grades.
Know before your customers do
StatusBird monitors Walmart Marketplace and 83 other services online stores depend on, plus your own storefront, every 2 minutes. When something goes down you get an SMS, email, or Slack alert with plain-English context, usually before the official status page catches up. Start monitoring free, no card required for the free plan.