Microsoft is making an important change to Excel to prevent attackers from spreading malware or phishing campaigns.

Need to use third-party programs to open files on your PC? Here's how to change file associations in Windows 10 and choose which apps open which file types.

Side note: Microsoft does allow you to change to any app, by right-clicking a relevant file and choosing open with>Choose default app.

On Windows 11, you can change the format of a file in multiple ways through File Explorer, Command Prompt, and from a compatible application. In this guide, I'll show you how.

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

Pro Microsoft Excel is making a major change around blocked file types - here's what we know News By Craig Hale published August 1, 2025 ...