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.

Learn how to change the default file format for saves in Word, Excel, and PowerPoint, so that you do not need to change it every time.

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

ITR-3 filing for AY 2025-26 is now live. It’s for individuals and HUFs with business, F&O, capital gains, or directorship. Filing is online with new rules.

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 ...

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.

Windows Explorer offers limited convenience for file operations, while freeware ‘Commander’ tools perform better.

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