# Error 521: Using cloudflare

**URL:** <https://forum.hestiacp.com/t/error-521-using-cloudflare/13976>\
**Category:** General Questions\
**Created:** [April 29, 2024, 9:31am UTC](https://forum.hestiacp.com/t/error-521-using-cloudflare/13976 "2024-04-29T09:31:23Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![AndyHestia](https://forum.hestiacp.com/letter_avatar_proxy/v4/letter/a/96bed5/32.png) [@AndyHestia](https://forum.hestiacp.com/u/AndyHestia)\
**Post date:** [April 29, 2024, 9:31am UTC](https://forum.hestiacp.com/t/error-521-using-cloudflare/13976/1 "2024-04-29T09:31:23Z")

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Hi,

I am running hestiaCP using cloudflare.

And now receive the error code 521.

Can someone suggest me, what causes this?

Until yesterday, everything worked out, and I haven’t done any changes to the hestiaCP/ server setup,  
just installed few plugins on wordpress.

Thanks

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**Author:** ![AndyHestia](https://forum.hestiacp.com/letter_avatar_proxy/v4/letter/a/96bed5/32.png) [@AndyHestia](https://forum.hestiacp.com/u/AndyHestia)\
**Post date:** [April 29, 2024, 12:45pm UTC](https://forum.hestiacp.com/t/error-521-using-cloudflare/13976/2 "2024-04-29T12:45:41Z")

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Ok, I was able to resolve the issue.

And this is strange:

In my hestiaCP panel (logged in as admin, under server settings), nginx was turned off.

Just had to start it again.

I cannot remember to ever have turned it off at anytime.

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**Author:** ![system](https://forum.hestiacp.com/uploads/default/original/1X/d9a5b68bf50ced83e880b56452e592b204761b19.png) [@system](https://forum.hestiacp.com/u/system)\
**Post date:** [May 29, 2024, 12:46pm UTC](https://forum.hestiacp.com/t/error-521-using-cloudflare/13976/3 "2024-05-29T12:46:39Z")

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Closed on May 29, 2024, 12:46pm UTC

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