Snapshots taken with TSM for Virtual Environments against a virtual machine with Windows 2008 R2 fails with error "An error occurred while quiescing the virtual machine. See the virtual machine's event log for details." - There is nothing specific in the system log or the application log of the vm at the time of the error in vmware.
When I take the snapshots manually in the VMware vSphere Client, they succeed. I have tested both with and without quiescing. I have also updated the VMware tools on the vm and checked vssadmin list writers for errors.
A similar virtual machine exists in the cluster with the same amount of hard disk space, and its snapshots initiated by 'TSM for Virtual Environments' succeeds every night.