Problem with Integretion Jira SM and Confluence

[Jens Brockhaus]

Hello,
i have a problem with an integration with the two system.
I get these errors:

The applications are hostest on one Server. They have different ports (confluence 8444 und SM 8443).

What had i made wrong?

Kind regards
Jens

[Jens Brockhaus · Accepted solution]

I found the solution: https://confluence.atlassian.com/confkb/failed-to-create-application-links-due-to-we-can-t-enable-the-incoming-authentication-because-confluence-is-not-reachable-1157180075.html
It was an Issue with the EasySSO-App.

[Nic Brough -Adaptavist-]

Your Jira seems to be set up to use Oauth to log in, whereas your Confluence does not.

To make this link work in both directions, set up both of them to use Oauth

[Jens Brockhaus]

Hello Nic,
thanks fpr your Help. When i activate OAuth inboth systems i get this errors:
confluence:

SM:

It seems that they can not communicate.
Any idea, why?
Kind regards
Jens

[Nic Brough -Adaptavist-]

It looks like you have not enabled Oauth on both ends.

[Jens Brockhaus]

Hello Nic,
i can select OAuth, but after i click "Save changes" i get the error. So i thing that OAuth is enabled on both systems.
Kind regards
Jens

[Nic Brough -Adaptavist-]

The error message is telling you that it is not.

[Jens Brockhaus]

Hello Nic,
but i do not know why. I deletetd the application links on both system. After that i start in jira SM to set a new application lijnk to confluence. The dialog seems t be fine:

An after i that i get a success message:

But in the details (Jira SM), there is an error:

When i enable OAuth i get this message:

I don't know what i have made wrong. I have another two system (Jira sm and confluence) on different hosts. There i don't have this issue.

Kind regards
Jens