Skype for Business

New-CsOnlineSession returns (404) Not Found

For some time ago I was in the process of setting up a Hybrid “Skype for Business Online” and “Lync 2013 On-oprem” environment. When it was time to activate the Lync-federation with the New-CsOnlineSession cmdlet I got rejected with a (404) Not Found

I received the following output: VERBOSE: Determining domain to admin VERBOSE: …

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