Hey folks,
we are trying to migrate Confluence Server (7.19.3) to Confluence Cloud using the official Cloud Migration Assistant. At the step to choose the cloud site it just loads for a while and then we get an error We can't communicate with your server:
The log on our Confluence Server shows a timeout:
2026-08-10 13:12:02,477 WARN [http-nio-8090-exec-1] [confluence.util.profiling.DefaultActivityMonitor] close Exceeded the threshold of 60000 ms: ActivitySnapshot{startTime=1786360022462, threadId=228, threadName='http-nio-8090-exec-1', userId='Julian', type='web-request', summary='/rest/migration/latest/cloud/generateCloudSiteSetupUrl'}
-- referer: https://confluence.xxx.de/admin/migration.action | url: /rest/migration/latest/cloud/generateCloudSiteSetupUrl | traceId: ef2533e819474613 | userName: Julian
We made sure that the firewall isn't the issue and allowed traffic for all domains listed here: https://support.atlassian.com/organization-administration/docs/ip-addresses-and-domains-for-atlassian-cloud-products/
I also tried downgrading the Confluence Cloud Migration Assistant and tried different versions, no luck.
Anyone experienced this issue?
Thank you
Julian
