A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Hi,
Persaonal.xlsb opens automatically every time Excel opens provided it has been created.
Writing a UDF wouldn't create P.xlsb unless that UDF was saved to P.xlsb. So at sometime; and maybe no associated with this UDF, someone has saved something to P.xlsb (maybe in error) and caused the creation of that file.
Now it is created I strongly recommend you hide it and forget it but if you don't want to do that then you can delete p.xlsb like this.
With the Excel application not running.
Open windows explorer, and assuming you did a standard installation, navigate to
C:\program files\microsoft office\office 12\xlstart
delete personal.xlsb
If this post answers your question, please mark it as the Answer.
Mike H