is a specialized password recovery tool designed to remove or recover passwords from Microsoft Excel files ( .xls , .xlsx , .xlsm , .xlsb ). Unlike brute-force tools that try millions of passwords per second, LostMyPass uses a combination of instant removal (for certain older formats) and advanced brute-force/attack methods for newer, more secure formats.

: As an online tool, you must upload your file to their servers. The service does not guarantee data security, and your documents might remain on their server after processing. File Size Limits

Is your file protected by an or just a Protected Sheet / Workbook restriction ?

Uploading proprietary, financial, or sensitive corporate data to a third-party cloud server poses a data privacy risk.