Understanding Walmart Connect Connection Resets
Walmart Connect (formerly Walmart Media Group) is hosted on Walmart’s private cloud infrastructure with Cloudflare as the CDN and TLS termination layer. When advertising partners access the platform from macOS Safari, the TLS 1.3 handshake with ECH can fail due to Cloudflare’s edge configuration not supporting the specific elliptic curve that Safari’s TLS stack uses for ECH key exchange.
Cloudflare periodically updates its accepted cipher suites and elliptic curves for TLS 1.3, and Apple’s SecureTransport implementation on macOS Sequoia may negotiate a curve that Cloudflare has recently deprecated, causing a handshake failure and connection reset.
Browser Integrity Sync and Session Binding on Walmart’s Platform
Walmart Connect uses browser integrity sync to validate advertiser sessions across page loads and API calls. When the TLS handshake fails and the integrity sync cannot complete, the platform interprets the failure as a potential bot or unauthorized access attempt and blocks the advertiser’s access. The result is an immediate ERR_CONNECTION_RESET on every subsequent attempt to access the platform.
Fixing Walmart Connect TLS Errors
Updating macOS to the Latest Version
Apple regularly updates the TLS stack in macOS Sequoia to support new cipher suites and elliptic curves. Open System Settings → General → Software Update and install any available updates. The latest macOS version includes the most current TLS configuration, which should be compatible with Cloudflare’s current cipher suite requirements.
Forcing TLS 1.2 via Safari Developer Menu
Open Safari → Develop → User Agent → Other. Enter a custom user agent string that includes a TLS 1.2 preference, such as:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Safari/605.1.15
This does not directly force TLS version but may influence how the server responds to Safari’s ClientHello. Alternatively, use Chrome with the --tls-max-version=1.2 flag as described in previous sections.
Checking Walmart Infrastructure Status
Before applying browser-level fixes, search “is the platform down right now” for Walmart Connect. If an active incident is reported, the connection reset is infrastructure-driven and no client-side fix will resolve it until Walmart restores normal service.
Call to Action
Use the webs.ninja network lab to run a TLS handshake diagnostic for Walmart Connect’s endpoints. The diagnostic identifies the specific cipher suite or elliptic curve that caused the handshake failure, providing actionable information that you can share with Walmart Connect support if the issue persists after applying the fixes above.