it's me again: updated procedure: 1) go to /opt/CSCOlumos/licenses/ and make a backup of "call_home_ca"2) edit original file and insert on the top of the file:-----BEGIN CERTIFICATE----- MIIFYDCCA0igAwIBAgIQCgFCgAAAAUUjyES1AAAAAjANBgkqhkiG9w0BAQsFADB...

many thanks mark-daniel! (btw: my case is unsolved since 2 weeks...)it seems, that I could fix it with your information. I've edited the file "call_home_ca" within /opt/CSCOlumos/licenses/1) I've deleted all text2) I added:-----BEGIN CERTIFICATE-----...

I have the same issue with several customers and different Versions (3.9 latest patch & 3.10 latest patch)Smart Licensing is not working...Connectivity can be successfully tested, but registration is failing "Registration failed due to Communication ...