How to recover an unsaved or overwritten Excel file
Practical steps to recover an Excel workbook you closed without saving or overwrote, depending on where it was stored.
Security & Repair
Protect, repair, compress and back up your Excel files.
How to share Excel files securely by email, cloud or link
Check what hidden data your Excel file carries, share only what’s needed, encrypt it with a password and choose wisely between attachment, cloud and link.
Excel macros: what they are, their risks and how to open XLSM files safely
Which formats can carry macros, how to spot a dangerous attachment and the steps to open an XLSM file without running code you don’t know.
How to Repair a Corrupted Excel File That Will Not Open
What to do when Excel will not open a file or shows an unreadable content error: common causes, built-in repair, recovering versions and online tools.
Why Your Excel File Is So Large and How to Reduce Its Size
The most common causes of heavy Excel files (phantom ranges, images, formatting, caches) and how to shrink them so they open and send faster.
Password-Protecting Excel: Protection Types and When to Use Each
The differences between encrypting a workbook, protecting its structure and protecting sheets in Excel, how secure each one is and good password practices.
Privacy and Security When Using Online Spreadsheet Tools
What to check before uploading an Excel file to an online tool, which data you should anonymize and how to work safely with sensitive information.
Backing Up Excel Files: How to Never Lose Your Work Again
Set up AutoRecover, use version history and apply the 3-2-1 rule so your important spreadsheets are always safe.