External workbook links which point to file types blocked by Excel's Trust Center will be disabled by default starting in October 2025, as Microsoft tightens down on reducing the potential ...

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

Normally, the IRS recommends that people file their income tax return as early as possible. But that's not always feasible, whether because of personal circumstances or a complicated tax situation.

If you are running behind when it comes to filing your 2024 taxes, should file for a tax extension. This can help you avoid rushing and making costly tax mistakes.

The newly approved Python Enhancement Proposal 751 gives Python a standard lock file format for specifying the dependencies of projects. Here’s the what, why, and when.

While filing an extension gives you an additional six months (until October 15) to complete and submit your tax return, it does not extend the time you have to pay any taxes owed.

While you don't need to worry about file formats with Kindle books purchased from Amazon, you might have books from other stores or personal documents to read.

Suppressing the warning lets Excel open the file without checking for format mismatches. This is useful if you trust the file and want to avoid repeated alerts.

With the Excel extension is not valid error, try starting the app in Safe Mode, repair the workbook or open the file in another program.

How to Open an XLS File in Excel. XLS files are Excel workbook files created in Excel 97 or Excel 2003. The 2007, 2010 and 2013 versions of the program use the XLSX format by default to save ...

Sending Excel files containing crucial financial and business data has risks. To add a layer of protection, you should learn to password protect an Excel file.