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FIX CMG CONVERSION FAILED FROM CLASSIC TO VM SCALE SET

September 1, 2022September 1, 2022 by me

I am trying to convert our CMG from classic to virtual machine scale set for the
MECM infrastructure upgrade and it failed. From the SCCM console itself, the CMG
was in error state, and if I check the CMG log, it said the CMG service doesn't
exist.



I went into Azure portal, I am still seeing the CMG classic , and no VM scale
sets.

So I contacted Microsoft, the fix is the manually revert back to CMG classic
state inside SCCM console, and do the conversion again.

Here are the steps:

1. Stop SMS Executive service
2. Run SQL query on your SQL Server: 
      update azure_service set FQDN = 'xxx.cloudapp.net', DeploymentModel = '1'
3. Start SMS Executive service
4. Monitor cloudmgr.log, wait for CMG convert back to Classic

After that, I tried to do the conversion, and it failed again. From the log, it
looks like the SCCM server itself doesn't have internet access to the new Azure
vault! After I setup a proxy connection for the SCCM server, the conversion was
a success!

Categories SCCM Tags sccm cmg


1 THOUGHT ON “FIX CMG CONVERSION FAILED FROM CLASSIC TO VM SCALE SET”

 1. Dan Clark
    November 11, 2022 at 6:18 pm
    
    Had a similar issue with a conversion from Cloud service (classic) to
    Virtual machine scale set failing due to a custom tagging policy being
    enforced in the Azure tenant.
    
    I was able to use the SQL query to get my CMG back online in the Cloud
    service (classic) mode while I work through the security policy that is
    blocking my upgrade.
    
    Thanks for posting!
    
    Reply


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