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.

You can delete or can remove File Type Associations using Registry Editor in Windows 11/10. We show you how to do this the right way.

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

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 ...

Your Kindle isn't restricted to books from Amazon. Here's how to send other ebook formats to your ereader, and where to get free ebooks, including with Amazon's Stuff Your Kindle events.

A simple random sample is a subset of a statistical population where each member of the population is equally likely to be chosen.

When you're reformatting a drive, memory card, or flash drive you need to pick a file format. If you see FAT32, exFAT, and NTFS, but don't know which one to pick, here's what you need to know.

There are an overwhelming number of AI image services available. Here's what you need to know to choose among Dall-E 3, Stable Diffusion, Adobe, Canva and others.

Learn how tax deductions work – and which ones you might be able to take for tax year 2024.

Small-business bookkeeping involves setting up a framework, choosing your method and keeping track of details.

Call of Duty plans to remove Modern Warfare 2 and 3 from game launcher to reduce the frankly comical size of the installation file The Price we pay.