The effect of enabling the Multi Factor Authentication for Skype for Business


I wrote this was because of one of my colleagues was unable to access his Skype for Business after enabling the MFA of his Office 365's account.

Symptom
After enabling the Multi-Factor Authentication on the Office 365 of the users, it keeps asking you to log in again.

Caused
By default, the application in the Office 365 in the matter Skype for Business is not using Modern Authentication.

Solution
Enable the Modern Authentication for Skype for Business per user. (It is because not every user has MFA enabled)

Steps

  1. Download Skype for Business Online, Windows PowerShell Module
  2. Use PowerShell and run below
    • import-module LyncOnlineconnector
    • $credential=get-credential
    • $cssession = New-CsOnlineSession –Credential $credential
    • import-pssession $cssession
    • Set-CsOAuthConfiguration -ClientAdalAuthOverride Allowed
    • Get-CsOAuthConfiguration

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