1. When registering RHEL-9.8.0-20251130.0 to insights (already registered against satellite6.17), the registration failed with an upload issue.

2. Packages:

[root@kvm-02-guest07 ~]# rpm -qa | grep insights

insights-core-selinux-3.6.10.1-6.el9.noarch

insights-core-3.6.10.1-6.el9.noarch

insights-client-3.9.1-3.el9.noarch

3. Always reproduce.

4. Reproduce steps:

(1) Register RHEL-9.8.0-20251130.0 against satellite successfully:

[root@kvm-02-guest07 ~]# subscription-manager register --activationkey=xxx --org=Default_Organization

The system has been registered with ID: 603c3090-44cb-4527-b6dd-22685538866e

The registered system name is: kvm-02-guest07.rhts.eng.brq.redhat.com

(2) Try to register insights:

[root@kvm-02-guest07 ~]# insights-client --register

Successfully registered host kvm-02-guest07.rhts.eng.brq.redhat.com

Automatic scheduling for Insights has been enabled.

Starting to collect Insights data for kvm-02-guest07.rhts.eng.brq.redhat.com

WARNING: Skipping file /etc/hosts

Writing RHSM facts to /etc/rhsm/facts/insights-client.facts ...

Uploading Insights data.

Upload attempt 1 of 1 failed! Reason: ('Connection aborted.', timeout('The write operation timed out'))

All attempts to upload have failed!

Please see /var/log/insights-client/insights-client.log for additional information

Upload failed.

5. Additional info:

(1) this bug does not exist on RHEL-10.2-20251130.1:

[root@dell-r640-026 ~]# subscription-manager register --activationkey=xxx --org=Default_Organization

The system has been registered with ID: 21262349-a175-4229-8bd5-017616ce1e6e

The registered system name is: dell-r640-026.dsal.lab.eng.pek2.redhat.com

[root@dell-r640-026 ~]# insights-client --register

Successfully registered host dell-r640-026.dsal.lab.eng.pek2.redhat.com

Automatic scheduling for Insights has been enabled.

Starting to collect Insights data for dell-r640-026.dsal.lab.eng.pek2.redhat.com

Writing RHSM facts to /etc/rhsm/facts/insights-client.facts ...

Uploading Insights data.

Successfully uploaded report from dell-r640-026.dsal.lab.eng.pek2.redhat.com to account 12445849.

[root@dell-r640-026 ~]#

(2) the related insights-client.log is uploaded as "satellite_registration_failure_insights_client.log".