Skype for Business 2019 and Hybrid configuration failing

MK GURU 1 Reputation point
2021-07-06T06:18:05.783+00:00

Hi,
We had SFB 2015 Hybrid configuration setup and working nicely. When we upgraded to SFB 2019 recently, the hybrid wizard (on SFB 2019 MACP)is not completing. It fails with error message (see screenshots)

MACP error
112042-sfb19-error-msg.jpg

Fiddler output on error

112024-sfb19-error-msg2.jpg

Microsoft Powershell module [2.3.1] has been installed.

Followed most of the instructions from here.
https://itgala.xyz/configure-hybrid-connectivity-between-skype-for-business-server-and-office-365/

Any help/advice would be much appreciated.

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A Microsoft communications service that provides communications capabilities across presence, instant messaging, audio/video calling, and an online meeting experience that includes audio, video, and web conferencing.
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