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.

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.

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