Update troubleshoot-resource-bridge.md

Author: alt-key

articles/azure-arc/resource-bridge/troubleshoot-resource-bridge.md

@@ -359,9 +359,13 @@ You have three options to move the Arc resource bridge VM:
 - If you're using Arc-enabled VMware, [run the Arc-enabled VMware disaster recovery script](../vmware-vsphere/disaster-recovery.md). The script will delete the appliance, deploy a new appliance and reconnect the appliance with the previously deployed custom location, cluster extension and Arc-enabled VMs.
 - Delete and [redeploy the Arc resource bridge](../vmware-vsphere/quick-start-connect-vcenter-to-arc-using-script.md).
 
-### Insufficient permissions
+### Insufficient privileges
 
-When deploying the resource bridge on VMware vCenter, you might get an error saying that you have insufficient permission. To resolve this issue, make sure that the user account being used to deploy the resource bridge has all of the following privileges in VMware vCenter and then try again.
+When deploying or upgrading the resource bridge on VMware vCenter, you might get an error similar to: 
+
+`{  ""code"": ""PreflightcheckError"", ""message"": ""{\n  \""code\"": \""InsufficientPrivilegesError\"",\n  \""message\"": \""The provided vCenter account is missing required vSphere privileges on the resource 'root folder (MoRefId: Folder:group-d1)'. Missing privileges: [Sessions.ValidateSession]. Please add the privileges to the vCenter account and try again. To review the full list of required privileges, go to https://aka.ms/ARB-vsphere-privilege.\""\n }'
+
+When deploying Arc resource bridge, you are asked to provide vCenter credentials. The Arc resource bridge locally stores the vCenter credentials to interact with vCenter. To resolve the missing privileges issue, the vCenter account used by the resource bridge needs the following privileges in VMware vCenter:
 
 **Datastore**