Update azure-monitor-agent-mma-removal-tool.md

Author: JeffreyWolford

articles/azure-monitor/agents/azure-monitor-agent-mma-removal-tool.md

@@ -12,6 +12,9 @@ ms.custom:
 
 # MMA Discovery and Removal Utility
 
+> [!NOTE]
+> We have received many reports from customers that this tool is failing to remove AMA agents. At this time, we recommend that this tool not be used. We are working to provide an at scale removal tool.
+
 After you migrate your machines to the Azure Monitor Agent (AMA), remove the Log Analytics or Microsoft Management Agent (MMA) to avoid duplication of logs. The Azure Tenant Security Solution (AzTS) MMA Discovery and Removal Utility can remove the MMA extension from Azure Virtual Machines (VMs), Azure Virtual Machine Scale Sets (VMSSs), and Azure Arc servers from a tenant.  
 
 > [!NOTE]
@@ -457,4 +460,4 @@ The script contains these parameters:
 |`DeleteResourceGroup`| Boolean flag to delete an entire resource group.| Yes|
 |`KeepInventoryAndProcessLogs`| Boolean flag to exclude the Log Analytics workspace and Application Insights. You can't use it with `DeleteResourceGroup`.| No|
 
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