Prevent Your VBA Code From Running While In Read-Only Mode

Prevent Your VBA Code From Running While In Read-Only Mode

What This Does

I had an instance where I needed to prevent users from running a workbook's macros unless the workbook was editable (not read-only).  This file was used by multiple people and my colleagues were accidentally updating the workbook while somebody else was already in the file.  This poses a problem since the changes could not be saved if the file was Read-Only.  Therefore, I added some code to only run the macros when the file was NOT ready only.  This served as a good check and also prevented a bunch of confusion. Here's how I initially did it:

Sub ReadOnlyCheck()
'PURPOSE: Test if file is Read-Only
'SOURCE: www.TheSpreadsheetGuru.com/the-code-vault

Dim Answer As Long

'Check to see if file is Read-Only
  If ThisWorkbook.ReadOnly = True Then
    Answer = MsgBox("Someone is currently editing this file and your changes will NOT be saved.  " _
      & "Do you wish to proceed?", vbYesNo, "Read-Only File")
    
    If Answer = vbNo Then Exit Sub
  End If

'Add Your Macro Code Here...

End Sub

But Wait! There's A Bug...

The above VBA code works great but there seems to be a bug when it analyzes files that are checked out from a server (for example a SharePoint file).  Because of this bug, we have to get creative and look at the Window Caption to determine if the file is actually in Read-Only mode.  The below code shows how you can accomplish this.

Sub ReadOnlyCheck()
'PURPOSE: Test if checked out file is Read-Only (ie SharePoint file)
'SOURCE: www.TheSpreadsheetGuru.com/the-code-vault

Dim Answer As Long

'Ensure ThisWorkbook is active so we can read-in window caption
  ThisWorkbook.Activate
  
'Check to see if file is Read-Only
  If InStr(1, Application.Caption, "Read-Only") > 1 = True Then
    Answer = MsgBox("Someone is currently editing this file and your changes will NOT be saved.  " _
      & "Do you wish to proceed?", vbYesNo, "Read-Only File")
    
    If Answer = vbNo Then Exit Sub
  End If

'Add Your Macro Code Here...

End Sub

How Do I Modify This To Fit My Specific Needs?

Chances are this post did not give you the exact answer you were looking for. We all have different situations and it's impossible to account for every particular need one might have. That's why I want to share with you: My Guide to Getting the Solution to your Problems FAST! In this article, I explain the best strategies I have come up with over the years to getting quick answers to complex problems in Excel, PowerPoint, VBA, you name it

I highly recommend that you check this guide out before asking me or anyone else in the comments section to solve your specific problem. I can guarantee 9 times out of 10, one of my strategies will get you the answer(s) you are needing faster than it will take me to get back to you with a possible solution. I try my best to help everyone out, but sometimes I don't have time to fit everyone's questions in (there never seem to be quite enough hours in the day!).

I wish you the best of luck and I hope this tutorial gets you heading in the right direction!

Chris "Macro" Newman :)