I am new admin in a hybrid environment on 2010 on premise exchange and Office 365. This organization is slowly moving users to O365.
The organization has created my logon as global admin and mailbox on inhouse exchange and it is working fine internally.
Issue is when I try to login to Web O365 using my global admin account I get an error:
Selected user account does not exist in tenant 'Compnay Name' and cannot access the application '4345a7b9-9a63-4910-a426-35363201d503' in that tenant. The account needs to be added as an external user in the tenant first. Please use a different account.
What do I need to do on my account in AD / exchange in order to be able to login to O365 as global admin ?
( Sorry new to O365 and can use some help )