Greetings and thank you in advance for any help.

I have a workbook that is 671K in size and contains about 75 different
worksheets. The first tab is a summary and details are provided on the
remaining tabs.

The problem I'm having is that the summary sheet has stopped updating. The
formulas are simple (e.g. sum a row, show the contents of a cell, etc.).
Calculation is set to automatic but I've tried switching it to manual and and
still nothing.

The only way a cell will update is if I select a specific cell, F2 then ENTER.

Any help you might provide is appreciated.

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Cells not calculating (correctly)

Niek Otten, March 31, 2006



Most frequent causes:



1. Calculation is set to Automatic. This often happens unintentionally, for example by opening another workbook first.
Calculation is an Excel-wide setting; the first workbook opened determines the calculation mode, which then applies to all open
workbooks and workbooks that are opened later in that instance of Excel. It can be changed manually (again, for all open
workbooks):
ToolsOptionsCalculation tab, check Automatic.

2. There are User Defined Functions (UDFs) which access cells directly from within the function, that is, not via the
argument list. Then Excel is not aware of the need of recalculation if the precedent cell changes. You can include
Application.Volatile in the function, but there is no guarantee this will always calculate cells in the correct sequence in all
(future) versions of Excel. It also causes the calling cells (and dependents) to always be recalculated, even if not necessary.
Really the best way is to include all precedent cells in the argument list.

3. You see the formulas in the cell, not the answers. Two options: a. ToolsOptionsView, Formulas is checked (you may
accidentally have hit the shortcut key: CTRL+`), b. the cell was formatted as text before you entered the formula. Format as
General and re- enter (F2, ENTER).

4. Excel version 5.0a (yes, very, very old!) has serious recalculation bugs, Excel 97 absolutely needs Service Pack 2 (SP2)
to calculate correctly.

5. Very, very rarely, Excel's dependency tree gets messed up. One way to rebuild it is to find and replace all "=" by "=",
for all sheets. Later versions of Excel rebuild by pressing CTRL+ALT+SHIFT+F9

6. For many calculation secrets, visit Charles William's site:
www.decisionmodels.com

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--
Kind regards,

Niek Otten


"DK" wrote in message ...
| Greetings and thank you in advance for any help.
|
| I have a workbook that is 671K in size and contains about 75 different
| worksheets. The first tab is a summary and details are provided on the
| remaining tabs.
|
| The problem I'm having is that the summary sheet has stopped updating. The
| formulas are simple (e.g. sum a row, show the contents of a cell, etc.).
| Calculation is set to automatic but I've tried switching it to manual and and
| still nothing.
|
| The only way a cell will update is if I select a specific cell, F2 then ENTER.
|
| Any help you might provide is appreciated.

One manual action that you may do to force the recalculation of formulas is
open the replace tool (menu Edit-Replace), and then replace "=" with "="
(just the equal sign, not the quotation marks).
It looks something trivial, as you replace one thing for the same, but it
may trigger the recalculation you need.

Miguel.

"DK" wrote:

Greetings and thank you in advance for any help.

I have a workbook that is 671K in size and contains about 75 different
worksheets. The first tab is a summary and details are provided on the
remaining tabs.

The problem I'm having is that the summary sheet has stopped updating. The
formulas are simple (e.g. sum a row, show the contents of a cell, etc.).
Calculation is set to automatic but I've tried switching it to manual and and
still nothing.

The only way a cell will update is if I select a specific cell, F2 then ENTER.

Any help you might provide is appreciated.

Thanks to both of you for your suggestions.

I tried the CTRL+ALT+SHIFT+F9 and that appears to have done the trick. I'm
not sure why there was a problem as all my other workbooks continue to calc
just fine but this one stopped.

Thanks again.

"DK" wrote:

Greetings and thank you in advance for any help.

I have a workbook that is 671K in size and contains about 75 different
worksheets. The first tab is a summary and details are provided on the
remaining tabs.

The problem I'm having is that the summary sheet has stopped updating. The
formulas are simple (e.g. sum a row, show the contents of a cell, etc.).
Calculation is set to automatic but I've tried switching it to manual and and
still nothing.

The only way a cell will update is if I select a specific cell, F2 then ENTER.

Any help you might provide is appreciated.