# Twilio: Expiration of Let's Encrypt's DST Root CA X3 Certificate Causing Connectivity Issues Between Twilio and Applications That Were Dependant on Let's Encrypt's Services

> Twilio status incident “Expiration of Let's Encrypt's DST Root CA X3 Certificate Causing Connectivity Issues Between Twilio and Applications That Were Dependant on Let's Encrypt's Services” on 2021-09-30: impact none (vendor’s label), 40 min, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/twilio/incidents/bbxld6ywy802
Last updated: 2021-09-30T02:29:00Z

- Impact (vendor’s label): none
- Status: resolved
- Started: 2021-09-30 01:49 UTC · Resolved: 2021-09-30 02:29 UTC · Duration: 40 min
- Updates: 1
- [Vendor status page: https://status.twilio.com/incidents/bbxld6ywy802](https://status.twilio.com/incidents/bbxld6ywy802)
- [Company: Twilio](https://rewindex.com/company/twilio.md)

## Timeline of updates

- **resolved** 2021-09-30 02:29 UTC: We have fully investigated the issue and it was determined that the issue was being caused due to the expiration of Let's Encrypt's DST Root CA X3 certificate. Customers will observe Error 11200 in the Twilio Console Debugger if they are impacted by this issue. Here is a link to the official documentation posted by Let's Encrypt: https://letsencrypt.org/docs/dst-root-ca-x3-expiration-september-2021

_From the vendor’s published history: only the final update text is available for incidents before Rewindex began polling this page._

## Cite this

Status incident (vendor impact label: none) posted by Twilio, started 2021-09-30 01:49 UTC, resolved after 40 min, 1 update(s).

- Canonical URL: https://rewindex.com/company/twilio/incidents/bbxld6ywy802
- Citation: Twilio, “Expiration of Let's Encrypt's DST Root CA X3 Certificate Causing Connectivity Issues Between Twilio and Applications That Were Dependant on Let's Encrypt's Services” (2021-09-30 01:49 UTC). Archived by Rewindex: https://rewindex.com/company/twilio/incidents/bbxld6ywy802 (CC BY 4.0).
- Markdown link: `[Twilio: Expiration of Let's Encrypt's DST Root CA X3 Certificate Causing Connectivity Issues Between Twilio and Applications That Were Dependant on Let's Encrypt's Services (2021-09-30)](https://rewindex.com/company/twilio/incidents/bbxld6ywy802)`


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Canonical: https://rewindex.com/company/twilio/incidents/bbxld6ywy802 · Markdown: https://rewindex.com/company/twilio/incidents/bbxld6ywy802.md · JSON: https://rewindex.com/api/v1/companies/twilio/incidents/bbxld6ywy802 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T14:57:02.086Z