Exeption             : Microsoft.ActiveDirectory.Management.ADException: Insufficient access rights to perform the 
                        operation ---> System.ServiceModel.FaultException: The operation failed due to insufficient 
                        access rights.
                           --- End of inner exception stack trace ---
                           at 
                        Microsoft.ActiveDirectory.Management.AdwsConnection.ThrowExceptionForExtendedError(String 
                        extendedErrorMessage, Exception innerException)
                           at Microsoft.ActiveDirectory.Management.AdwsConnection.ThrowExceptionForFaultDetail(Fault
                        Detail faultDetail, FaultException faultException)
                           at Microsoft.ActiveDirectory.Management.AdwsConnection.ThrowException(AdwsFault 
                        adwsFault, FaultException faultException)
                           at Microsoft.ActiveDirectory.Management.AdwsConnection.Modify(ADModifyRequest request)
                           at Microsoft.ActiveDirectory.Management.ADWebServiceStoreAccess.Microsoft.ActiveDirectory
                        .Management.IADSyncOperations.Modify(ADSessionHandle handle, ADModifyRequest request)
                           at Microsoft.ActiveDirectory.Management.ADActiveObject.Update()
                           at Microsoft.ActiveDirectory.Management.Commands.ADSetCmdletBase`3.SetFromIdentity(O 
                        identity)
                           at Microsoft.ActiveDirectory.Management.Commands.ADSetCmdletBase`3.ADSetCmdletBaseProcess
                        CSRoutine()
                           at Microsoft.ActiveDirectory.Management.CmdletSubroutinePipeline.Invoke()
                           at Microsoft.ActiveDirectory.Management.Commands.ADCmdletBase`1.ProcessRecord()
TargetObject          :
CategoryInfo          : NotSpecified: [Remove-ADGroupMember], 
                        ADException
FullyQualifiedErrorId : ActiveDirectoryServer:8344,Microsoft.ActiveDirectory.Management.Commands.RemoveADGroupMember
ErrorDetails          : 
InvocationInfo        : System.Management.Automation.InvocationInfo
ScriptStackTrace      : at <ScriptBlock>, path\remove user from groups.ps1: 
                        line 10
                        at <ScriptBlock>, path\remove user from groups.ps1: 
                        line 5
                        at <ScriptBlock>, <No file>: line 3
                        at <ScriptBlock>, <No file>: line 3
PipelineIterationInfo : {0, 1, 1}

$ACLList = @()
if ($ACL -notin $ACLList) {$ACLList += $ACL}