# Getting Cloudflare 521 Error After Upgrade to 3.5.0.beta8-dev

**URL:** <https://meta.discourse.org/t/getting-cloudflare-521-error-after-upgrade-to-3-5-0-beta8-dev/375963>\
**Category:** Product Support\
**Tags:** cloudflare\
**Created:** [July 26, 2025, 6:22pm UTC](https://meta.discourse.org/t/getting-cloudflare-521-error-after-upgrade-to-3-5-0-beta8-dev/375963 "2025-07-26T18:22:08Z")\
**Posts on this page:** 1\
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**Author:** ![LotusJeff](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/lotusjeff/32/477888_2.png) [@LotusJeff](https://meta.discourse.org/u/LotusJeff)\
**Post date:** [July 27, 2025, 2:20am UTC](https://meta.discourse.org/t/getting-cloudflare-521-error-after-upgrade-to-3-5-0-beta8-dev/375963/4 "2025-07-27T02:20:45Z")

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Working from memory, cloudflare certs have a 90 day duration. This will require you to create new certs every 3 months. Do you remember how old your certs are?

The default setting is to use Let’s Encrypt. The system will auto renew your certs for you. One less thing to manage manually.

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