Create your own offline Certificate Request for SCOM Off-Domain Server

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troubleshooting   guides   operationsManager   certificates


In the below example we are assuming your machine is named IIS-2019.

Create a new file on your machine and name it:


Edit the file to include something similar to the following (NOTE: Be aware Operations Manager only uses the first CN name in the Subject):

Subject=",OU=Servers,O=Support Team,L=Charlotte,S=North Carolina,C=US"
Exportable=TRUE ; Private key is exportable - Required for Server Authentication
KeySpec=1 ; Key Exchange – Required for encryption
KeyUsage=0xf0 ; Digital Signature, Key Encipherment
ProviderName = "Microsoft RSA SChannel Cryptographic Provider"
ProviderType = 12
KeyAlgorithm = RSA

; Optionally include the Certificate Template
; [RequestAttributes]
; CertificateTemplate="SystemCenterOperationsManager"

OID= ; Server Authentication
OID=  ; Client Authentication

Open an Administrator Command Prompt and navigate to where you saved the above file.
Run the following:

Certreq -New -f IIS-2019-CertReq.inf IIS-2019-CertRequest.req

:notebook: Note

The server where you run the above Certreq command will be where the Certificate Private Key will be stored.

Upload the above (IIS-2019-CertRequest.req) file to your Certificate Authority.

Once you receive back your signed certificate, import the Certificate into the Local Computer Personal Certificate Store:


On a side note. If you run the SCOM Certificate Checker script above and it shows an output that looks like this:
Certificate Checker Script Missing Private Key

You may also notice that the Private Key for the Certificate is missing:
Certificate Private Key Missing

It is possible you may need to run the following command in an Administrator Command Prompt to restore the Keyspec and Private Key (replace the numbers & letters after my with the serial number of your Certificate):

certutil -repairstore my 1f00000008c694dac94bcfdc4a000000000008

certutil Repair Store - Command Output

After you run the certutil command above, you will notice the Certificate is now showing a Private Key (notice the key icon):
Certificate Private Key Present

You should now see this when you run the SCOM Certificate Checker Powershell Script:
Certificate Checker Script Successful

Now you just need to import the Certificate with MOMCertImport (located on the SCOM Installation Media):
MOMCertImport Location

Right Click and Run the Program as Administrator, select the certificate you imported:
Confirm Certificate in MOMCertImport

Lastly, you will need to restart the Microsoft Monitoring Agent (HealthService). You can do this via Powershell with this command:

Restart-Service HealthService

After restarting the Microsoft Monitoring Agent (HealthService). You will wait until you see the following Event ID in the Operations Manager Event Log (20053) confirming that the certificate has been loaded:

Log Name: Operations Manager
Source: OpsMgr Connector
Date: 2/28/2022 10:35:36 AM
Event ID: 20053
Task Category: None
Level: Information
Keywords: Classic
User: N/A
The OpsMgr Connector has loaded the specified authentication certificate successfully.

Don’t forget the Management Server
The Management Server also needs to have a certificate requested for itself, and imported into the Personal Store in the Local Machine Certificates. You also need to run MOMCertImport.exe on the Management Server for the Management Server certificate. Otherwise the communication between the Management Server and the Agent or Gateway Server will not work via certificates.

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About Blake Drumm
Blake Drumm

I like to collaborate and work on projects. My skills with Powershell allow me to quickly develop automated solutions to suit my customers, and my own needs.

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About Blake Drumm

My name is Blake Drumm, I am working on the Azure Monitoring Enterprise Team with Microsoft. Currently working to update public documentation for System Center products and write troubleshooting guides to assist with fixing issues that may arise while using the products. I like to blog on Operations Manager and Azure Automation products, keep checking back for new posts. My goal is to post atleast once a month if possible.

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