# What does Error 503 Backend is unhealthy refer to

**URL:** <https://community.wowza.com/t/what-does-error-503-backend-is-unhealthy-refer-to/49939>\
**Category:** Wowza Streaming Engine\
**Created:** [October 16, 2017, 5:32pm UTC](https://community.wowza.com/t/what-does-error-503-backend-is-unhealthy-refer-to/49939 "2017-10-16T17:32:07Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Mike\_Berks](https://avatars.discourse-cdn.com/v4/letter/m/bc79bd/32.png) [@Mike\_Berks](https://community.wowza.com/u/Mike_Berks)\
**Post date:** [October 16, 2017, 5:32pm UTC](https://community.wowza.com/t/what-does-error-503-backend-is-unhealthy-refer-to/49939/1 "2017-10-16T17:32:07Z")

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Teachers clicked on their shortcut this morning and encountered Error 503 Backend is unhealthy

Details cache-ord1720 etc…

It looks like if they closed their browser and opened it again it would work. Any anyone explained what happened and how do I prevent it from occurring? Thanks

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**Author:** ![Aniko\_Terek](https://avatars.discourse-cdn.com/v4/letter/a/a88e4f/32.png) [@Aniko\_Terek](https://community.wowza.com/u/Aniko_Terek)\
**Post date:** [August 11, 2020, 9:44pm UTC](https://community.wowza.com/t/what-does-error-503-backend-is-unhealthy-refer-to/49939/2 "2020-08-11T21:44:00Z")

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Hello!

You can see some solutions at [ErrorCodesHero.com](https://www.errorcodeshero.com/error-503-backend-is-unhealthy/): [https://www.errorcodeshero.com/error-503-backend-is-unhealthy/](https://www.errorcodeshero.com/error-503-backend-is-unhealthy/)

It nicely explains and helped me to solve the same issue.