Title: 521 error
Last modified: June 22, 2018

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# 521 error

 *  Resolved [radiolip](https://wordpress.org/support/users/radiolip/)
 * (@radiolip)
 * [7 years, 11 months ago](https://wordpress.org/support/topic/521-error/)
 * Hello. Installed the plug-in, after that the site is unavailable 521 error with
   https. and from http:// Index of /
    [ICO] Name Last modified Size Description
   Apache/2.4.25 (Debian) Server at site.com Port 80
 * I deleted the plugin via ftp, but is not solved.
 * why not available, how to restore?

Viewing 1 replies (of 1 total)

 *  Plugin Author [Razvan Stanga](https://wordpress.org/support/users/razvanstanga/)
 * (@razvanstanga)
 * [7 years, 10 months ago](https://wordpress.org/support/topic/521-error/#post-10526188)
 * It’s not plugin related.

Viewing 1 replies (of 1 total)

The topic ‘521 error’ is closed to new replies.

 * ![](https://ps.w.org/vcaching/assets/icon-256x256.png?rev=1293998)
 * [Varnish/Nginx Proxy Caching](https://wordpress.org/plugins/vcaching/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/vcaching/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/vcaching/)
 * [Active Topics](https://wordpress.org/support/plugin/vcaching/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/vcaching/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/vcaching/reviews/)

## Tags

 * [caching](https://wordpress.org/support/topic-tag/caching/)

 * 1 reply
 * 2 participants
 * Last reply from: [Razvan Stanga](https://wordpress.org/support/users/razvanstanga/)
 * Last activity: [7 years, 10 months ago](https://wordpress.org/support/topic/521-error/#post-10526188)
 * Status: resolved