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.

Cannot rename file on Desktop? File Name too long? Action cannot be completed because the file is open in another program? Access is denied in OneDrive? Here's the fix!

How to clear your Android phone cache (and greatly improve its performance) This quick change could make your device feel instantly faster and more responsive, no matter what make or model you're ...

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.