In most cases, you won't have a problem until you exceed approximately 1,000 folders, or a gigabyte of space is used.Outlook works fine for a little bit (5-10 minutes) before We get many questions about Office activation failing: "After installing and activating Office, Outlook keeps asking to accept the End User License Agreement (EULA)." This is caused by Windows security and permissions.
If they don't, you'll have to ask them for this information in order to set up your email on your mobile device.
See Server settings to request from your email provider for a handy guide on what to ask for.
Coming Soon to Windows 10: Office 365 Search Outlook Links Won't Open In Windows 10 BCM Errors after Upgrading to Windows 10 Outlook can't send mail in Windows 10: error Ox800CCC13 Missing Outlook data files after upgrading Windows?
If you have a work or school account that uses Office 365 for business or Exchange-based accounts, talk to your Office 365 admin for support.
Office 365 admins can contact Office 365 for business support.