Recently, I opened an old Excel file and found out that it was password-protected, or it would not open. After a lot of research, I found Softaken Excel Password Remover Tool. It is a very simple software, which works on a local machine without internet upload.
I just had to select the file, and the tool removed the password in a few seconds, without any loss of data.
Supports both .xls and .xlsx formats
Trial version available
100% safe and user-friendly
If you have also forgotten your Excel password, then definitely try it.