Triggers "file format differs from extension" warnings in modern Excel Is incompatible with many modern spreadsheet tools and automation workflows Cannot be parsed by most data processing libraries ...

The IRS has extended the tax filing deadline to June 8 for all 95 counties in Tennessee. Taxpayers can file for an automatic extension until October 15 by submitting a simplified form. Failing to file ...

The April 15 tax deadline is here, and if you're feeling like you could use just a little more time, take it. Instead of filing a return by April 15, you can opt to file a short, less than one-page ...

When you try to open an Excel or Word file and see the message "The file format or file extension is not valid," it is natural to worry that your work data might be lost.

If Excel AutoSave suddenly stopped working for workbooks stored in OneDrive or SharePoint after an Office/OneDrive update, the most common reason is that Excel is no longer treating the workbook as a ...

It’s been a while since the new version of Outlook overtook the old classic version, but users are still unhappy with it. The latest issue? Certain Excel attachments aren’t opening in Outlook anymore, ...

Microsoft has started looking into a problem that is preventing users from opening some Excel file attachments with non-ASCII file names in the new Outlook client ...

Microsoft is working to resolve a known issue that prevents some users from opening Excel email attachments in the new Outlook client. According to a service alert (EX1189359) seen by BleepingComputer ...

Have you ever sent an Excel file to a colleague, only to realize they couldn’t open it because of compatibility issues? Or perhaps you’ve spent hours perfecting a spreadsheet, only to see its ...

Anthropic on Tuesday announced a new Claude feature that some users should appreciate. The chatbot can now create files for you based on the instructions you provide in a prompt. Claude can generate ...