Atlassian Marketplace server is not reachable

If you are seeing the error message ‘The Atlassian Marketplace server is not reachable. Available application updates will not appear on this page.” on the Jira Version & License page – https://jira.mycompany.com/plugins/servlet/applications/versions-licenses. Then you should check the following three places:

1. Network
   Make sure your Jira box has a workable network. Run some ping or curl testings to ensure the Jira box can reach the Internet.
2. Proxy
   For most enterprise, they normally have a corporate proxy in place. If so, you need to add the proxy settings in the Java property settings in setenv.sh file. Here is an example:

   -Dhttp.proxyHost=proxy.mycompany.local -Dhttp.proxyPort=8080 -Dhttp.proxyUser=jira -Dhttp.proxyPassword='******' -Dhttp.nonProxyHosts='*.mycompany.com|*.mycompany.local' -Dhttps.proxyHost=proxy.mycompany.local -Dhttps.proxyPort=8080 -Dhttps.proxyUser=jira -Dhttps.proxyPassword='******' -Dhttps.nonProxyHosts='*.mycompany.com|*.mycompany.local'

3. Certificate
   For most corporate proxy, they intercept the SSL traffics which means they decrypt the SSL traffics then re-encrypt them with its own certificate which is normally issued by internal CA. Jira is a Java application, and Java does not honour the trusted CA in the OS, it has its own trusted CA keystore which by default is /usr/java/default/lib/security/cacerts, default password is changeit. So you can either tell Java to use a different trusted keystore where the internal root CA and intermediate CA certificates are saved or import them into the default trusted keystore. To me, I prefer the second option, as I may need those public root CA as well. To import the Internal CA certificate, here is the sample command:

   keytool -import -alias mycompany-internal-ca -keystore cacerts -file mycompany-internal-ca.crt