How do I make Excel macros run automatically?

In Excel 2026, I have a macro that generates an output file.

However, in the event that the computer is left unattended for a period of time, the macro does not run. How can I make it run automatically?

You could create a desktop shortcut to your macro and have it run automatically. Create a shortcut to your macro in the same folder as the workbook you want to run on startup. The target will be something like "C:PathToExcelMacro.xlam" Make sure that it is set to open with. Programs/Startup. If you want this macro to run when you start Excel (and Excel is the only application) then use the WorkbookOpen event like this: Private Sub WorkbookOpen(). Dim MyMacro As String. MyMacro = "C:PathToYourMacro.xlsm" If Right(MyMacro, 1) <> "" Then. MyMacro = MyMacro & "". End If. Call ThisWorkbook.RunMacro(MyMacro) End Sub. You may add a WorkbookOpen event handler to your project, which will start the macro. For example: Private Sub WorkbookOpen(). Call ThisWorkbook.RunMacro(myMacro) Alternatively, if you wish to add a shortcut to the executable that starts Excel, you can add an app.startup item, as detailed here.

Why is my VBA code not running automatically?

My code takes more than a minute to run.

I've set a "Run" and "Stop" button for this code and after I run it manually, the program runs through fine but when I press the button it doesn't do anything. Why is this? How can I get it to work?

Public Sub FindData(). Dim F As Long, K As Long. 'set the row below in case values are not equal. F = 1. For K = 1 To Len(Sheet1.Cells(1, Columns.Count).Value)
If Sheet1.Cells(1, K).Value = Sheet2.Cells(1, Columns.Count).Value Then
If Sheet1.Cells(F, K).Value > Sheet2.Cells(1, Columns.Count).Value Then
Sheet2.Cells(Rows.End(xlUp).Offset(0, 1).Resize(Sheet1.Cells(F, K).Value - Sheet2.Cells(1, Columns.Count).Value).Copy
Else. Sheet1.Cells(F, K).Resize(Sheet2.Cells(1, Columns.Count).Value - Sheet1.Cells(F, K).Value).Cells(1, Columns.Count).

Why is my Excel macro not running?

The reason that your code isn't running is that you don't include a line of code to tell Excel to run the macro.

The VBA editor is very useful in this regard, and you should use it to debug your code.

There are a number of reasons that your code wouldn't run. For example, if you have other macros in the same file that are running, or if you have a code module that is part of your project, they will run, so you need to make sure that your project doesn't have any conflicting code modules.

You also need to ensure that you have the appropriate references for the functions, classes, etc. That you are using.