Using Classic Outlook on Windows for personal email, calendar, and contact management
Hi Marco,
May I know about the issue? Could you please provide us with the detailed information about the issue so that we can further assist you here in the forum?
Moreover, if you are using Office 365 Business please refer to the article for your country support phone number see under āGlobal Office 365 and Microsoft 365 Business support phone numbers for adminsā
Your time and understanding will be highly appreciated.
Best regards,
Shyamal