error on code

hello there,
when I try to remove duplicates from a listview with more than 3k records in it.. I get an error

run time error 35600
index out of bound

the line bellow with >> is the one that gets yellow

Dim lRet As ListItem, strTemp As String, intCnt As Integer
    intCnt = 0
    
    Do While intCnt <= lvwMain.ListItems.Count - 1
        intCnt = intCnt + 1
        strTemp = lvwMain.ListItems.Item(intCnt).SubItem(1)
        Do
>>          lvwMain.ListItems.Item(intCnt).SubItems(1) = ""          
            Set lRet = lvwMain.FindItem(strTemp, lvwSubitem)
            
            If Not lRet Is Nothing Then
                lvwMain.ListItems.Remove (lRet.Index)
            End If
 
        Loop While Not lRet Is Nothing
        
        lvwMain.ListItems.Item(intCnt).SubItem(1) = strTemp
        DoEvents            
    Loop

Select all Open in new window