It's not the same without you

Join the community to find out what other Atlassian users are discussing, debating and creating.

Atlassian Community Hero Image Collage

Unable to save changes or create new pages.

Hello. I'm a new Sys Admin at my company and we have Confluence 6.11.2 - on Windows Server 2019. 

I have training coming up but sure enough it seems Synchrony threw an error. 


1. Log from: C:\Program Files\Atlassian\Confluence\logs\atlassian-synchrony-proxy.txt

-->2020-03-11 09:38:50 ERROR c.a.s.p.w.WebSocketProxy:49 afterConnectionEstablished - Handshake error


2. Log from: C:\Program Files\Atlassian\Application Data\Confluence\logs\atlassian-confluence.txt


2020-03-11 08:19:15,633 ERROR [SimpleAsyncTaskExecutor-1] [web.socket.client.WebSocketConnectionManager] log Failed to connect
javax.websocket.DeploymentException: The HTTP request to initiate the WebSocket connection failed
at org.apache.tomcat.websocket.WsWebSocketContainer.connectToServerRecursive(
at org.apache.tomcat.websocket.WsWebSocketContainer.connectToServer(
at org.springframework.web.socket.client.standard.StandardWebSocketClient$
at org.springframework.web.socket.client.standard.StandardWebSocketClient$
Caused by: java.util.concurrent.ExecutionException: The remote computer refused the network connection.

at org.apache.tomcat.websocket.WsWebSocketContainer.connectToServerRecursive(
... 5 more
Caused by: The remote computer refused the network connection.

... 1 more


3. Screen shot from our Administration Configuration page:



1 answer

1 accepted

0 votes
Answer accepted
Daniel_Wong Community Leader Mar 11, 2020

Hi Carlos,

It looks like the synchrony service is having trouble establishing connection to Confluence. In particular this part of the error log:

Caused by: The remote computer refused the network connection.

You might want to check your firewall settings to ensure the synchrony ports are open.
Have a read through the following KB articles for some help with troubleshooting:

If you need to quickly get page edits working and don't have a huge requirement to have collaborative editing, then you can actually switch Collaborative editing off temporarily. This will allow people to add/edit pages until you sort out the network issues.

Hi Daniel,

Seems the Synchrony cache had maxed out. Increased memory pool max capacity. Then restarted Synchrony. Go to Services - right click the Atlassian service, click properties then edit the java using the command prompt. 





Suggest an answer

Log in or Sign up to answer
Community showcase
Posted in Confluence

Lessons and Learnings: Six Months of Working Remote [Discussion]

Hey there, folks! For most of us, the past six months- yes, you read that right- have been a journey. More people than ever before have pivoted to working remotely, and navigating being on-scre...

8,368 views 6 6
Join discussion

Community Events

Connect with like-minded Atlassian users at free events near you!

Find an event

Connect with like-minded Atlassian users at free events near you!

Unfortunately there are no Community Events near you at the moment.

Host an event

You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events

Events near you