VBA - Unable to map drive to sharepoint on another computer - vba

Question

I'm mapping to the company's sharepoint drive using VBA. The intention is to save local file to sharepoint, and delete local file and unmapped the drive after success.
On my machine(Windows 10 64bits), the code works perfectly fine, successfully mapped the drive, created folder and file, successfully uploaded to sharepoint and unmap the drive.
However, when I run the same excel workbook that contains the same code on my colleague's computer(Window 7), it failed. There's no error being shown, except that it keeps on loading and loading until Excel Not Responsive. I tried manually mapping the drive, it success.
I tried to debug and found out that the code stops (keeps on loading) at MsgBox "Hello" but could not figure out what's missing.
Both are using Excel 2016
Any help and suggestions are appreciated. let me know if more info is needed. Thanks in advance.
This is my vba code
Sub imgClicked()
Dim fileName As String
Dim SharePointLib As String
Dim MyPath As String
Dim folderPath As String
Dim objNet As Object
Dim copyPath As String
Dim copyFilePath As String
folderPath = Application.ThisWorkbook.path
MyPath = Application.ThisWorkbook.FullName
Dim objFSO As Object
Dim strMappedDriveLetter As String
Dim strPath As String
Dim spPath As String
strPath = "https://company.com/sites/test/test 123/" 'example path
spPath = AvailableDriveLetter + ":\test.xlsm" 'example path
copyPath = folderPath + "\copyPath\"
'Add reference if missing
Call AddReference
Set objFSO = CreateObject("Scripting.FileSystemObject")
With objFSO
strMappedDriveLetter = IsAlreadyMapped(.GetParentFolderName(strPath))
If Not Len(strMappedDriveLetter) > 0 Then
strMappedDriveLetter = AvailableDriveLetter
If Not MapDrive(strMappedDriveLetter, .GetParentFolderName(strPath)) Then
MsgBox "Failed to map SharePoint directory", vbInformation, "Drive Mapping Failure"
Exit Sub
End If
End If
' Check file/folder path If statement here
End With
Set objFSO = Nothing
End Sub
Code for getting available drive
' Returns the available drive letter starting from Z
Public Function AvailableDriveLetter() As String
' Returns the last available (unmapped) drive letter, working backwards from Z:
Dim objFSO As Object
Dim i As Long
Set objFSO = CreateObject("Scripting.FileSystemObject")
For i = Asc("Z") To Asc("A") Step -1
Select Case objFSO.DriveExists(Chr(i))
Case True
Case False
Select Case Chr(i)
Case "C", "D" ' Not actually necessary - .DriveExists should return True anyway...
Case Else
AvailableDriveLetter = Chr(i)
Exit For
End Select
End Select
Next i
Set objFSO = Nothing
MsgBox "This is the next available drive: " + AvailableDriveLetter ' returns Z drive
MsgBox "Hello" ' After this msgBox, starts loading until Not Responsive
End Function
Function to Map drive
Public Function MapDrive(strDriveLetter As String, strDrivePath As String) As Boolean
Dim objNetwork As Object
If Len(IsAlreadyMapped(strDrivePath)) > 0 Then Exit Function
Set objNetwork = CreateObject("WScript.Network")
objNetwork.MapNetworkDrive strDriveLetter & ":", strDrivePath, False
MapDrive = True
MsgBox "Successfully Created the Drive!"
Set objNetwork = Nothing
End Function
Code for MappedDrive
Public Function GetMappedDrives() As Variant
' Returns a 2-D array of (1) drive letters and (2) network paths of all mapped drives on the users machine
Dim objFSO As Object
Dim objDrive As Object
Dim arrMappedDrives() As Variant
Dim i As Long
Set objFSO = CreateObject("Scripting.FileSystemObject")
ReDim arrMappedDrives(1 To 2, 1 To 1)
For i = Asc("A") To Asc("Z")
If objFSO.DriveExists(Chr(i)) Then
Set objDrive = objFSO.GetDrive(Chr(i))
If Not IsEmpty(arrMappedDrives(1, UBound(arrMappedDrives, 2))) Then
ReDim Preserve arrMappedDrives(1 To 2, 1 To UBound(arrMappedDrives, 2) + 1)
End If
arrMappedDrives(1, UBound(arrMappedDrives, 2)) = Chr(i) ' Could also use objDrive.DriveLetter...
arrMappedDrives(2, UBound(arrMappedDrives, 2)) = objDrive.ShareName
End If
Next i
GetMappedDrives = arrMappedDrives
Set objDrive = Nothing
Set objFSO = Nothing
End Function
Public Function IsAlreadyMapped(strPath As String) As String
' Tests if a given network path is already mapped on the users machine
' (Returns corresponding drive letter or ZLS if not found)
Dim strMappedDrives() As Variant
Dim i As Long
strMappedDrives = GetMappedDrives
For i = LBound(strMappedDrives, 2) To UBound(strMappedDrives, 2)
If LCase(strMappedDrives(2, i)) Like LCase(strPath) Then
IsAlreadyMapped = strMappedDrives(1, i)
Exit For
End If
Next i
Set objNetwork = Nothing
End Function
Add Reference
Sub AddReference()
'Macro purpose: To add a reference to the project using the GUID for the
'reference library
Dim strGUID As String, theRef As Variant, i As Long
'Update the GUID you need below.
strGUID = "{420B2830-E718-11CF-893D-00A0C9054228}"
'Set to continue in case of error
On Error Resume Next
'Remove any missing references
For i = ThisWorkbook.VBProject.References.Count To 1 Step -1
Set theRef = ThisWorkbook.VBProject.References.Item(i)
If theRef.isbroken = True Then
ThisWorkbook.VBProject.References.Remove theRef
End If
Next i
'Clear any errors so that error trapping for GUID additions can be evaluated
Err.Clear
'Add the reference
ThisWorkbook.VBProject.References.AddFromGuid _
GUID:=strGUID, Major:=1, Minor:=0
'If an error was encountered, inform the user
Select Case Err.Number
Case Is = 32813
'Reference already in use. No action necessary
Case Is = vbNullString
'Reference added without issue
Case Else
'An unknown error was encountered, so alert the user
MsgBox "A problem was encountered trying to" & vbNewLine _
& "add or remove a reference in this file" & vbNewLine & "Please check the " _
& "references in your VBA project!", vbCritical + vbOKOnly, "Error!"
End Select
On Error GoTo 0
End Sub

Answer 1

Procedure imgClicked is calling function AvailableDriveLetter multiple times. Remember that the function has to execute each time you refer to it.
I ran imgClicked (assuming that's the procedure you start with) and I was told, twice, "Next available letter = Z" and "Hello" and then it crashed Excel (perhaps getting stuck in a loop of creating FileSystem objects to look for an available drive letter?)
Try assigning AvailableDriveLetter to a variable (string) at the beginning of the procedure and referring to the variable each time you need the value, and see if you still have the issue.
(Remember to save before execution -- I get frustrated when troubleshooting "application hanging" issues because I keep forgetting to save my changes and then lose them on the crash!)
If this doesn't work, add a breakpoint (F9) on the End Function line after your "Hello" box and see if the code stops there. (I have trouble believing the MsgBox or End Function are the culprit.) If not, which procedure runs after that?
One more thing whether the issue is resolved or not:
Add Option Explicit at the very beginning of your module and then Compile the project and fix your missing variable declaration(s).
This is recommended whenever troubleshooting an issue as a means to eliminate variable declaration issues as a possible cause.