🤔 Issue:
Forge Apps in Confluence Cloud may fail to load, showing a persistent spinning wheel. You may also see an error was loaded over HTTPS, but requested an insecure frame...
🧐 Common Cause:
This is often caused by network-level security tools (such as DNS filtering or proxy inspection) that block or rewrite requests to Atlassian’s content delivery network.
🌱 Solution:
Ensure that your network allows access to the following Atlassian domains, which Forge apps use without inspection or modification:
*.cdn.prod.atlassian-dev.net
Atlassian maintains an official list of domains and IPs that should be allowed here:
IP addresses and domains for Atlassian cloud apps | Atlassian Support