ITMS 8.X
This can be corrected by forcing the NS to reconfigure the site binding for the site server:
Go to Settings > Notification Server > Site Server Settings
Expand the Site Server, then select Certificates Rollout > Override the Global Settings by custom settings.
Enable Install intranet certificate check box, verify existing port used to bind HTTPS traffic and enable the Force overwrite HTTPS binding option
Verify the FQDN in the Hosts field then enable this policy and save changes