This is some VBA code that when a workbook is opened the username used to log into windows will be displayed in a cell, in the example its in C1. This needs to be added to either “ThisWorkbook” or added to a button if you fancy.
Declare Function WNetGetUser Lib “mpr.dll.” _
Alias “WNetGetUserA” (ByVal lpName As String, _
ByVal lpUserName As String, lpnLength As Long) As Long
Const NoError = 0 ‘The Function call was successful
Private Sub workbook_Open()
‘ Buffer size for the return string.
Const lpnLength As Integer = 255
‘ Get return buffer space.
Dim status As Integer
‘ For getting user information.
Dim lpName, lpUserName As String
‘ Assign the buffer size constant to lpUserName.
lpUserName = Space$(lpnLength + 1)
‘ Get the log-on name of the person using product.
status = WNetGetUser(lpName, lpUserName, lpnLength)
‘ See whether error occurred.
If status = NoError Then
‘ This line removes the null character. Strings in C are null-
‘ terminated. Strings in Visual Basic are not null-terminated.
‘ The null character must be removed from the C strings to be used
‘ cleanly in Visual Basic.
lpUserName = Left$(lpUserName, InStr(lpUserName, Chr(0)) – 1)
‘ An error occurred.
MsgBox “Unable to get the name.”
‘ Display the nfame of the person logged on to the machine.
‘MsgBox “The person logged on this machine is: ” & lpUserName
Worksheets(1).Range(“C1“).Value = lpUserName
If you change the bold C1 this will change the location of the username.