How to Convert My Facebook Page Into a Business Page Without Losing All of My Contacts. Converting your Facebook page into a business page on Facebook can be done in less than five minutes in the ...

If you cannot open an Excel file and see Excel cannot open the file because the file format or extension is not valid error, see this post.

If Microsoft Excel opens a Blank screen when you open an existing file, then you can stop Excel from opening a Blank workbook or sheet.