Excel Formula Efficiency 10: Automatic & Manual Calculation

I wonder if it is possible to create macro for back/forth switching between manual/automatic formula calculation?

I used the formula

Application.Calculation = false

in my file to make the macro calculate faster because it took like 15-30min to run now the formulas wont refresh even if they use different cells in their calculation it returns the same value and answer.

How do i get it back to the way it was before i put this formula in because my file was working until I used this.

Whenever I open up a new spreadsheet, the calculation option (Tools. Option, Calculation) is set to Manual. Is there a way to have the default be Automatic?

Thanks.

This is out of curiosity really....

Why is it for no apparent reaon what-so-ever my excel chart decides to switch to Manual Calculation?

I'll be working on a sheet and all of a sudden i realise its not calculating so i have to go in to Tools --> Options --> and tick the Automatic radio button. It just seems to so it randomly?

Hi everyone

My spreadsheet has index/match formulas that all appear to be calculating correctly and the file has been saved. When I open it, it still appears correct. However, when I change the setting tools/options/calculation/automatic it get #N/A errors...why? When I try to use a simple vlookup formula in the automatic setting, it does not work and also gives me #N/A errors.

Thanks,
p2f

I have an add-in from a third party vendor that I can not change and they will not change for me.
They in their infinite wisdom decided that their macro would flip the calculation to Manual.
I am looking for a way to create a macro that will recognize when their macro does this and flip calculation back to Automatic.

Thanks in advance

I've been finding recently thst my excel files have been running extraordinarily slowly, and calculating (from 0 to 100%) endlessly until I decide to kill the program and exit.

I've since read that it might be that I was running some code that needed an instruction to manually calculate while the code was performing and then return to automatic calculation on exiting the code.

I've placed the line ... Application.Calculation = xlCalculationManual at the beginning of the code and Application.Calculation = xlCalculationAutomatic at the end of the code as can be seen below ...

Code:

Private Sub EnterData_Click()
Application.Calculation = xlCalculationManual
Dim FoundFlag As Boolean
Dim txtSheetName As String

txtSheetName = ComboBox1.Value & ComboBox2.Value & ComboBox4.Value & ComboBox3.Value

On Error Resume Next
    FoundFlag = Not Worksheets(txtSheetName) Is Nothing
On Error GoTo 0

If FoundFlag Then
    Worksheets(txtSheetName).Activate
Else
    Worksheets("TemplateDataEntry").Copy After:=Sheets(Sheets.Count)
        
    ActiveSheet.Name = txtSheetName
End If
    Dim rFound As Range, rLook4 As Range
    
    Set rLook4 = Sheets("DropBoxLists").Range("Q2")
    
    With Sheets(txtSheetName)
    
        Set rFound = .Columns("C").Find(What:=rLook4, After:=.Range("C12"), LookIn:=xlValues, _
                                        LookAt:=xlPart, SearchOrder:=xlByRows, SearchDirection:=xlNext, _
                                        MatchCase:=False, SearchFormat:=False)
        
        If Not rFound Is Nothing Then
            Application.Goto Reference:=rFound, Scroll:=True
            ActiveWindow.ScrollColumn = 1
        Else
            MsgBox "Can't find " & rLook4 & " on sheet " & txtSheetName
        End If
        
    End With
    Application.Calculation = xlCalculationAutomatic
Unload Me
End Sub

However, it doesn't seem to have done anything and I'm wondering if I've scripted it correctly or placed it in the correct spots.

Also, this isn't the only code I have running in this program. Should I be adding it to every code I have ?

I never had this problem with excel 2003. In fact, I've only had it since playing with xlsm.

Any ideas?

The Accounts team just produced a Board report on our financial situation. An
email was sent out with an excel sheet attached. Both I and a colleague
opened the file direct from Outlook and both saw significantly different
results reported.

His version of Excel had switched the Calculation tab (Tools/Options menu)
to Manual - mine however remained as Automatic and reported the correct
numbers. Despite having the same formulas in the same cells his was not
summing the equations correctly. Why is this?

Hello everyone. I have this question. Is it possible to set manual calculation for formulas in a workbook only, and avoid this attribute to other workbooks? Thanks

Hi,

sometimes, when I workon exisiting file, the calculations do not come out automatically., then I go to "options", & select the calculation to "Automatic".
I am surprised, as nobody changes to manual. why it is changing to Manual ? how to keep it permanently "Automatic"