Cannot connect Jira to Confluence

Tom van der Meer_d74cih

We've recently lost the Confluence connection in all our Jira projects. The Project pages are empty, and we can not connect to an existing Space or Project. We also can't create a new space from Jira:

The pages still exist in Confluence.

I've tried adding a new Application Link to 'System Jira' from the Confluence settings, but this doesn't help. 

The following error keeps popping up in the Network tab from Jira:

 

Does anybody know how to solve this ?

Sahir Maharaj_28wu8p

Hello @Tom van der Meer

From my limited experience, this issue might stem from misconfigured application links or network restrictions.

Also, verify both tools are properly linked and ensure no firewall or network rules are blocking the connection.

For further assistance, contact Atlassian support: https/support.atlassian.com/contact/#/.