# DST Root CA X3: expired since 2021

**URL:** <https://community.letsencrypt.org/t/dst-root-ca-x3-expired-since-2021/189751>\
**Category:** Help\
**Created:** [December 19, 2022, 2:28pm UTC](https://community.letsencrypt.org/t/dst-root-ca-x3-expired-since-2021/189751 "2022-12-19T14:28:00Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![Bruce5051](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/bruce5051/32/76576_2.png) [@Bruce5051](https://community.letsencrypt.org/u/Bruce5051)\
**Post date:** [December 19, 2022, 3:51pm UTC](https://community.letsencrypt.org/t/dst-root-ca-x3-expired-since-2021/189751/3 "2022-12-19T15:51:32Z")

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Here are a few links worth reading through:

- [Long (default) and Short (alternate) Certificate Chains Explained](https://community.letsencrypt.org/t/long-default-and-short-alternate-certificate-chains-explained/162526)
- [Help thread for DST Root CA X3 expiration (September 2021)](https://community.letsencrypt.org/t/help-thread-for-dst-root-ca-x3-expiration-september-2021/149190)
- [DST Root CA X3 Expiration (September 2021) - Let's Encrypt](https://letsencrypt.org/docs/dst-root-ca-x3-expiration-september-2021/)
- [Issue root ISRG Root X3 with RSA cross-signed by ISRG Root X1](https://community.letsencrypt.org/t/issue-root-isrg-root-x3-with-rsa-cross-signed-by-isrg-root-x1/188091)

You can find more by searching this forum for **DST Root CA X3**.

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_[View the full topic](https://community.letsencrypt.org/t/dst-root-ca-x3-expired-since-2021/189751)._