====== The plugin repository could not be contacted. Make sure your server is allowed to contact www.dokuwiki.org and check your proxy settings. [Retry] ======


===== Main reason of this problem =====

PHP can't establish ssl conection to update.dokuwiki.org because PHP's certification has expired
===== Solution =====
==== 1.Update PHP's certification ====
Take Bt Panel using by my server as an example，you can find php管理 at 应用管理处，Search "openssl.cafile" at configuration file, find the path of the certification file（for me is /etc/pki/tls/certs/ca-bundle.crt）, then use the file manager to open it.

Enter the [[https://curl.se/docs/caextract.html]], download the latest certification file（cacert.pem）

Use Text Editor(e.g. VIM) to open the certification file，copy all of it，replace server's ca-bundle.crt with it, don't forget to save it.

Done!

===== Reference =====
  * [[https://forum.dokuwiki.org/d/20344-the-plugin-repository-could-not-be-contacted|The plugin repository could not be contacted
]]<sup>DokuWiki User Forum</sup>

{{tag>dokuwiki 原创}}