Showing posts with label MFA. Show all posts
Showing posts with label MFA. Show all posts

Monday, September 2, 2019

Skype for Business Server Users Client Prompts for Exchange Credentials for Office 365 MFA users


One of the environment that I had worked on as part of the Exchange Online migration involves the existence of Skype for Business.

For Exchange Online users that are provisioned for MFA, it has been reported that they encountered an error in Skype for Business client. "Exchange needs your credentials. Until then, you might see outdated info in Skype for Business".

Though this is not a hard error, this will result in stale Address Book Service (ABS), and intermittent Free/Busy presence issues.



To resolve this, add the registry key in the affected machines.

HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\16.0\Lync

Then, apply the AllowAdalForNonLyncIndependentOfLync registry key setting:

“AllowAdalForNonLyncIndependentOfLync”=dword:00000001