Production outage – TLS handshake failure to *.myshopify.com blocking live integrations

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Production outage – TLS handshake failure to *.myshopify.com blocking live integrations

Dear Support,

This is a production-blocking issue impacting our live Shopify integration.

Our backend systems are unable to establish a TLS handshake to
https://insulectro.myshopify.com.

This integration worked previously and stopped without any application-side changes.

Even with SNI explicitly enabled, the server closes the connection before sending a certificate.

Evidence (from production server):

openssl s_client -connect insulectro.myshopify.com:443 -servername insulectro.myshopify.com

Result:

  • TCP connection succeeds

  • TLS handshake reads 0 bytes

  • No peer certificate available

  • No cipher negotiated

Because the TLS handshake fails, all HTTPS-based API calls (including Oracle UTL_HTTP) fail with:

ORA-29273: HTTP request failed
ORA-29259: end-of-input reached

Impact:

  • Live production integrations are blocked

  • Price / order / API synchronization cannot run

  • Business operations are affected

Request:
Please treat this as urgent / production outage and confirm whether there were:

  • Recent TLS / certificate / CDN changes

  • New TLS version or cipher requirements

  • Any policy changes affecting legacy or backend HTTPS clients

We need guidance or remediation urgently to restore production service.

Thank you,

Kamal Hossain

1 Like
2

Hey Kamal, you’d probably be best raising this directly with Shopify support or partner support. Just think you might get a more urgent/speedy reply from someone who can help that way!