"Franz Verga" wrote in message
...

Hi Kruno,

The WEEKNUM function belongs to the Analysis ToolPak (ATP) add-in, so you
have to install it.

Menu Tools, Add-ins, flag Analysis ToolPak and also Analysis ToolPak -
VBA.
click OK. Now your WEEKNUM is back.


Unbelievably how frustrating this "little" things can be. I had checked ATP
but not the one with VBA.

Thank you!