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Navishkar Sadheo's avatar
Navishkar Sadheo
Steel Contributor
Nov 24, 2020

Exchange 2016 - Hybrid - Exchange Delegation Federation certificate expired

Hi All

Hope everyone is keeping well.

The "Exchange Delegation Federation" certificate has expired on my Exchange 2016 server.

Mail flow between Exchange Online and Exchange on-prem still appears to be flowing fine.

Which is the best way to renew this? Will re-running the HCW recreate the certificate? Also will mail between Exchange Online and Exchange on-prem stop working eventually?

 

Appreciate any advice.

2016
exchange online
Exchange Server
hybrid
office 365

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  • AlexHoehn's avatar
    AlexHoehn
    Copper Contributor
    Nov 25, 2020

    Navishkar Sadheo Good Morning, 

    had to do this once and I just followed this MS Doc:
    https://docs.microsoft.com/de-de/exchange/renew-the-federation-certificate-exchange-2013-help

     

    HCW can only establish the FederationTrust but not renew the MFG cert. MailFlow won't be affected. This only has impact on the FederationTrust/OrganizationRelationship from onPrem to Exo.

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