Morning folks,
I'm having an odd issue with setting up an exchange hybrid configuration between exchange 2010 sp3 and exchange online via the latest version of the Microsoft Hybrid Configuration Wizard:

I have also run a hybrid connectivity test to Microsoft 365 endpoints, and am getting an issue reported when testing against https://nexus.microsoftonline-p.com on port 443:

All advise and direction is welcomed.
Thanks,
Mick
