Had a strange one today.
Customer had tried previously to setup the connection between VMM and SCOM but made some mistake somewhere along the line and then uninstalled the SCOM console without removing the connection as they said the console was causing the VMM service to constantly crash.
Having not seen that behaviour before and slightly doubting it somewhat I re-installed the console and sure enough was prevented from accessing the VMM console as the service was crashing.
Just as an added check, I tried running some PowerShell commands to check it wasn't a GUI issue only to be created by error messages complaining that the VMM service wasn't running or accessible.
So I uninstalled the console again which allowed me access back to VMM and running the Get-SCOpsMgrConnection showed me the broken connection. However attempts to remove via the console or PowerShell were both met by errors telling me I needed the SCOM console installed first in order to manage the connection. Arh.. slight problem...
After checking everything I could think of (SPN's, SCP's, Service Accounts etc etc) and not finding anything that stood out (Including nothing useful in the event logs) I thought I'd try a timing trick.
So I opened up a SCVMM PowerShell window ready, kicked off the SCOM console install again and then repeatedly spammed Remove-SCOpsMgrConnection -Force and wouldn't you know it after a few messages saying the SCOM console must be installed, just before the install completed the command completed successfully and removed the broken connection. More to the point the SCOM console installation completed and the VMM service didn't crash.
After recreating the connection everything remained stable, but even though the create connection job ran successfully, the following error was present in the connector details:
“Operations Manager discovery failed with error: “Exception of type ‘Microsoft.VirtualManager.EnterpriseManagement.common.discoverydatainvalidrelationshipsourceexceptionOM10’ was thrown.
This is because the SCOM connection was created with the PRO-Tips enabled but without a SCOM monitoring agent deployed to the VMM Server.
Easily fixable, just untick the PRO and Maintenance Mode connection settings, deploy a SCOM agent to the VMM server and once the agent is installed and reporting, re-enable the options.
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