To fix the “Excel file format and extension don’t match” error, first check if the file extension matches its format. Try renaming the file with the correct extension (e.g., .xlsx for Excel ...

Microsoft Excel offers a pre-2007 file extension of .xls and a post-2007 file extension of .xlsx. Although Calc can't save to the new .xlsx file extension, you can use a combination of Calc and ...

Microsoft says it will align the files considered dangerous and blocked in OneNote with those blocked by Outlook, Word, Excel, and PowerPoint. The complete list includes 120 extensions according ...

Microsoft Excel files -- and other formats that Micr. Chron Logo Hearst Newspapers Logo. Skip to main content. Newsletters. ... Files that have an ODS extension are spreadsheet files ...

Microsoft has silently added new group policies to allow Office 365 admins to block Excel users from opening untrusted Microsoft Query files with IQY, OQY, DQY, and RQY extensions.