# Help thread for DST Root CA X3 expiration (September 2021)

**URL:** <https://community.letsencrypt.org/t/help-thread-for-dst-root-ca-x3-expiration-september-2021/149190>\
**Category:** Help\
**Created:** [April 6, 2021, 11:43pm UTC](https://community.letsencrypt.org/t/help-thread-for-dst-root-ca-x3-expiration-september-2021/149190 "2021-04-06T23:43:50Z")\
**Posts on this page:** 1\
**Showing post:** 776

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**Author:** ![maxi322](https://avatars.discourse-cdn.com/v4/letter/m/47e85d/32.png) [@maxi322](https://community.letsencrypt.org/u/maxi322)\
**Post date:** [July 28, 2021, 1:40pm UTC](https://community.letsencrypt.org/t/help-thread-for-dst-root-ca-x3-expiration-september-2021/149190/776 "2021-07-28T13:40:39Z")

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When comes the time that the AIA-URL "[http://r3.i.lencr.org/](http://r3.i.lencr.org/)" will serve the R3 Version that is signed by ISRG Root X1 and not the old R3 that is signed by DST Root CA X3 and is only valid until 29.09.2021?

This can become a problem with improperly configured servers where the client browser tries to load the intermediate from the AIA Server after September 2021.

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_[View the full topic](https://community.letsencrypt.org/t/help-thread-for-dst-root-ca-x3-expiration-september-2021/149190)._