Excel Session timer 10min splash screen Warning then 15min force close

When you unschedule, you have to pass the time it was scheduled, just like for the other routine.

It works! So i added an extra part that closes the workbook after 15min, so the splash screen will serve as a warning that 10min are up and 5min remaining before a save close event is forced.

This will prevent the users from "hogging" the file.

here's the final working code

In workbook:

Private Sub Workbook_BeforeClose(Cancel As Boolean)
StopTimer
End Sub

Private Sub Workbook_Open()

StartTimer10min
StartTimer15min

End Sub

In my module:

Public RunWhen As Double
Public RunWhen2 As Double
Public Const cRunIntervalSeconds10 = 600 '10min
Public Const cRunWhat10 = "MsgPrompt"  ' the name of the procedure to run
Public Const cRunIntervalSeconds15 = 900 '15min
Public Const cRunWhat15 = "CloseAll"  ' the name of the 2nd procedure to run

'This program prompts the user after time has met a preset
Sub MsgPrompt()
    UserForm2.Show
End Sub

Sub StartTimer10min()
    RunWhen = Now + TimeSerial(0, 0, cRunIntervalSeconds10)
    Application.OnTime EarliestTime:=RunWhen, Procedure:=cRunWhat10, _
        Schedule:=True
End Sub
Sub StartTimer15min()
    RunWhen2 = Now + TimeSerial(0, 0, cRunIntervalSeconds15)
    Application.OnTime EarliestTime:=RunWhen2, Procedure:=cRunWhat15, _
        Schedule:=True
End Sub

Sub KillForm()
Unload UserForm2
End Sub
Sub StopTimer()
        On Error Resume Next
    Application.OnTime EarliestTime:=RunWhen, Procedure:=cRunWhat10, _
        Schedule:=False
        
        On Error Resume Next
    Application.OnTime EarliestTime:=RunWhen2, Procedure:=cRunWhat15, _
        Schedule:=False
        
        On Error Resume Next
Application.OnTime EarliestTime:=Now + TimeValue("00:00:07"), Procedure:="KillForm", _
Schedule:=False
End Sub

Sub CloseAll()

'This closes the file, and saves any changes if changes were made 
Workbooks("Book1.xls").Close SaveChanges:=True
End Sub

userform code:

Public Sub UserForm_Initialize()
Application.OnTime Now + TimeValue("00:00:07"), "KillForm"
End Sub

Thanks again