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 federal tax deadline is April 15 for most taxpayers, but you can file an IRS tax extension, which pushes the filing due date to October 15. However, you still must pay your tax balance by the ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. If you haven't filed your tax return yet and don't have the time or ...

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 ...

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 ...

For fixing Windows errors, we recommend Fortect: Fortect will identify and deploy the correct fix for your Windows errors. Follow the 3 easy steps to get rid of Windows errors: If you want to open the ...

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 has begun rolling out a small but significant update to Claude. Starting today you can use the chatbot to create and edit Excel spreadsheets, documents, PowerPoint slide decks and PDFs. In ...

Microsoft has announced that it will start disabling external workbook links to blocked file types by default between October 2025 and July 2026. After the rollout ...