I have been trying to setup Salesforce as Identity Provider for Office 365 apps as per the article using SAML.
I have setup start url as https://login.microsoftonline.com/login.srf?msg=AuthnReq&realm=my-user-domain-here.my.salesforce.com&wa=wsignin1.0&wtrealm=urn:federation:MicrosoftOnline&wctx=bk%3D1367916313%26LoginOptions%3D3.
Note that I have replaced PostToIDP.srf from the url in article with login.srf as it was giving not found error.
When I launch Office365 app through salesforce app laucher, it navigates to office but shows following error: AADSTS70001: Application with identifier https://urn-federation-MicrosoftOnline was not found in the orgId tenant.
Is there anything that I am missing here?