WDB files are used in Windows Work Database, and since they are discontinued, you need to use one of these methods to open WDB files ...

Does a file with a .bak extension make you wonder what it is? Use this guide to learn what is a BAK file and how to open it in Windows 11/10.

Though DAT files, which house data as the shortened name implies, are usually best left alone, here's how you can open them.

Learn how to use a Microsoft 365 setting to choose whether to open files in the online or desktop app, giving you full control for each file.