In case you looking for downloading services.wsdl for Office 365 possible that you may find that is not so straightforward.
In general services.wsdl usually located on URL:
https://server_name/ews/services.wsdl but
How to determine actual server for Office 365 mailbox?
On internet you may find such kind of solution:
— Login to your e-mail account using Outlook Web App (OWA).— Click Options > See All Options > Account > My Account > Settings for POP, IMAP, and SMTP access.
— In the list of entries, locate the server name
In fact it is not exactly correct, because name you will see there is outlook.office365.com – which is global alias and does not pointing to actual server:
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