This version of Confluence is unrecognized by the Atlassian Marketplace. It might be a non-standard

[Mayuresh Kamble]

Hi Community Folks,

Recently I refreshed the data in my Confluence Data Center staging instance from Production backup (Version 9.2.19).
Instance is up and running successfully but the instance is not able to communicate with Atlassian marketplace even though from the server all the required URL's are reachable.

[Mayuresh Kamble · Accepted solution]

Hi @Trudy Claspill  and @Enric Font ,

Thank you for providing the solutions. The issue was with setenv.sh file, there was an https proxy port argument which I removed and instance is able to connect to marketplace now!

Regards,
Mayuresh

[Trudy Claspill]

Hello @Mayuresh Kamble 

Have you cleared the Plugin and UPM caches?

https://support.atlassian.com/confluence/kb/universal-plugin-manager-or-add-on-update-fails/

Have you checked the server if on your staging server to make sure it is not showing the same ID as your production server? Having the same ID can cause a problem if both instances are able to connect to the marketplace.

https://support.atlassian.com/confluence/kb/how-to-change-the-server-id-of-confluence/

[Enric Font]

Dear @Mayuresh Kamble 

Did you check Base URL in General Configuration → Server Base URL? Confirm that Base URL is for the stagging instance.

If URL BASE is correct, try clearing Marketplace Cache:

Stop Confluence and clear:

<confluence-home>/plugins-cache
<confluence-home>/plugins-osgi-cache
<confluence-home>/bundled-plugins
<confluence-home>/temp

Then restart.