Create CSR(Certificate signing request) from Exchange Admin Center

MASEE Solution Guide - Technical Dept Head
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This article helps you create a certificate request for a certificate nearing expiry or an expired certificate from EAC (Exchange Admin Center) or EMS (Exchange Management Shell) which includes all the required SANs. Applies to Exchange 2013/2016/2019.

Create CSR (Certificate Signing Request) 

from EAC (Exchange Admin Center).


  1. Open the EAC and navigate to Servers > Certificates. Select the certificate that needs to be renewed and click on Renew.
  2. Enter the UNC (e.g. \\localhost\c$\cert\certrequest.req or \\localhost\c$\cert\certrequest.req) path and click OK. 
  3. You will see a file certificate request. created and a file created in the server.File created.

Now you created a certificate request successfully. from EAC.


Create CSR (Certificate Signing Request) 

from EMS(Exchange Management Shell).


1. Run the following command to get the thumbprint of the certificate which is nearing expiry, or has expired.
Get-ExchangeCertificate | where $_.IsSelfSigned -eq $false} | Format-List,FriendlyName,Subject,CertificateDomains,Thumbprint,NotBefore,NotAfter


2. Run the following command to renew.
Get-ExchangeCertificate -Thumbprint <Thumbprint> | New-ExchangeCertificate -GenerateRequest -RequestFile <FilePathOrUNCPath>\<FileName>.req


You will see a file certificate request created and a file created in the server.

File created.

Now you created a certificate request successfully. from EMS.

Please check this article to complete the CSR
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MASEE Solution Guide - Technical Dept Head
CERTIFIED EXPERT
Most Valuable Expert2017 and 2020.
O365, Exchange Server,Windows Server, Active Directory, Virtualization, Teams and Email Migration Expert.

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