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Connection to the server cannot be established (certificate Exception)

Hello, the connection between my CallManager and my IM and Presence is failed.

I have this error message when Iam in Cisco Unified Serviceability in the menu Tools/Control Center Feature Services)

How can I resolve this problem, thanks for your answers

The version of my callManager is 10.5.2.10000-5

The version of my IM and Presence is 10.5.2.20000-1

2 REPLIES 2
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Beginner

I'm having the exact same issue with 11.5.1.11900-21, but It's only to my PUB and 1 SUB. I noticed that in my certs mgmt. page of the IM&P server that one of my subs certs was downloaded directly from the CUCM PUB, but the other two did not, so I added them manually, but this didn't help. I tried restarting the Cisco Intercluster Sync Agent and this didn't help either. Does Cisco have a bug that we're unaware of?

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I added a new sub and is running into the same issue.  was this resolved