Office 365 needed to run Skype for Business? RRS feed

  • Question

  • Hi all,

    when trying to sign in to Skype for Business, I am told that signing in is not possible because of problems with the DNS-configuration (error code KB2566790). The DNS entries have been changed according to this article:


    Unfortunately, signing in still doesn't work. My company hasn't purchased Office 365 so I was wondering if that might be the reason for my problem.

    So please tell me if purchasing Office 365 will allow me to sign in, or if that's not the problem, tell me about possible solutions that you know. 

    Thursday, October 26, 2017 11:34 AM

All replies

  • So long as you assigned SFB Online license, be it a non-expired trial license or a valid license, you should be able to sign in successfully as follow.

    Thursday, October 26, 2017 2:26 PM
  • If you want to sign in to Skype for Business online you will need an Office 365 tenant with a license that grants you SFB Online. Otherwise you wont be able to sign in.

    Adding DNS wont help if you don't have O365 tenant and SFB license assigned to your account

    Please mark as helpful if you find my contribution useful or as an answer if it does answer your question. That will encourage me - and others - to take time out to help you. Thank you! Off2work

    Thursday, October 26, 2017 6:38 PM
  • Hi mvrenegor_e-motiontech,

    Would you please tell us which account did you use to sign in Skype for business?

    I am agree with others.

    If you use SFB online, you need to buy and assign license for the users then they can sign in to SFB online successfully.

    I will share a document about how to assign license for O365


    Alice Wang

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    • Proposed as answer by Alice-Wang Monday, October 30, 2017 9:47 AM
    Friday, October 27, 2017 2:53 AM