Exchange Server Federation Error

Question

Hello,
I'm using Exchange Server 2016 CU19 (on premise) and trying to setup Federation Trust for Calendar Sharing, I enabled federation, made TXT record in External DNS for primary domain.
I have problem on "Set-FederatedOrganizationIdentifier" cmdlet it returns error "An error occurred while attempting to provision Exchange to the Partner STS. Detailed Information "An error occurred
accessing Windows Live"(please see full error in attachment) I tried to open internet access on both way: with proxy server and directly from network firewall, also setup "internetwebproxy" on exchange servers, but error is the same. please any advice, Thank you.

Answer 1

Hi @Shota Tadumadze

The official KB lists some possible causes when running this command Set-FederatedOrganizationIdentifier and get the error "An unexpected error occurred on a send"

I would suggest you firstly check if your issue is related to TLS1.2, please make sure your on-premises environment supports TLS 1.2, just like this similar error discussed: Hybrid Configuration Wizard Stuck on adding federated domains

Exchange Server TLS guidance Part 2: Enabling TLS 1.2 and Identifying Clients Not Using It
Exchange Server TLS guidance Part 3: Turning Off TLS 1.0/1.1

And after performing the operations above, verify the result again, and check if anything else missed introduced in the KB above.

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Answer 2

This was the solution for me, Exchange 2016 throwing the same "An unexpected error occurred on a send" whether attempted via the powershell command, or via ECP / Organization / Manage federation, or by running the HCW. I had to grab the regedit text from the other page (this one is image screenshots), and edit out the directional "" and replace them with straight "", and it worked perfectly after rebooting.