Problem

Unable to proceed, after hitting Save (after uploading a profile photo):

Cause

Proxy configuration such as NGINX or Apache that may have prevented the PUT request from being fired

Resolution

Please note that proxy configuration are beyond the support scope of Atlassian Support

Try to bypass the proxy and see whether the problem persists (access via the Confluence IP address and port, example: http://192.168.1.1:8090 ). If the issue is resolved after bypassing the proxy, but you wish to keep Confluence behind the proxy, then try to check the proxy configuration for lines such as this (this is in NGINX):

if ($request_method !~ ^(GET|HEAD|POST)$ )
{ return 444;

You may need to modify it to:

if ($request_method !~ ^(GET|HEAD|POST|PUT)$ )
{ return 444;