Forum Discussion

sandiven1154's avatar
sandiven1154
Copper Contributor
Mar 18, 2026

Issue with certificate renewal for exchange Edge Transport Server

Hello team,

 

I have come across a very particular problem
I deployed 2 exchange server 2019 with one edge transport server 

When we are renewing the Certificates with  wildcard certificate  on both mailbox server ,and on edge transport server ,it is impossible for me to renew the edge subscription

 

It says the cerificate is in "doublon" (repetitive) on one of the Exchange servers.I have always been using same certificate on exchange server be it edge or mailbox

I tested a bogus different certificate on mailbox and on edge,only then th e edge sync works

Did anybody come across this issue.

 

Thanks

admin
edge
exchange
EXCHANGE 2019 CU15
Exchange Server

1 Reply

  • oliwer_sundgren's avatar
    oliwer_sundgren
    Steel Contributor
    Apr 08, 2026

    Hi! Cant say that I have ran into this issue before, but I have always used separate Certificates for the Edge servers.

    Did you try to remove and re-create the edge subscription? Do you only have one Edge server or multiple?

     

    Kind Regards

    Oliwer