How to unprotect Excel sheet if forgot the password

ToddSumrall Does the process work only for Windows or also MAC OS? 

In my case (Mac OS) I see the following .xml file, so I am not sure which fields to delete.

Thanks in advance for your input, 

Dimitrios

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<encryption xmlns="http://schemas.microsoft.com/office/2006/encryption" xmlns:p="http://schemas.microsoft.com/office/2006/keyEncryptor/password" xmlns:c="http://schemas.microsoft.com/office/2006/keyEncryptor/certificate"><keyData saltSize="16" blockSize="16" keyBits="256" hashSize="64" cipherAlgorithm="AES" cipherChaining="ChainingModeCBC" hashAlgorithm="SHA512" saltValue="9p/eXy9YwQzD1WNXL7BZSQ=="/><dataIntegrity encryptedHmacKey="wD8+C4tULXQMSBhSBAgM9xnsFrxN++QpTb/lKwmpltsZnPW2vgfD2eY96pLFTP2Qfa4RW1UTqoELrveCAezTGg==" encryptedHmacValue="v6ibUo/F769r9Pn0OPbqctfXvUObE7eXGmWrnYM+RIPQDU1h49OnRp3PFtHljLTFw051V3Ph/+oTnxziBqtCQQ=="/><keyEncryptors><keyEncryptor uri="http://schemas.microsoft.com/office/2006/keyEncryptor/password"><p:encryptedKey spinCount="100000" saltSize="16" blockSize="16" keyBits="256" hashSize="64" cipherAlgorithm="AES" cipherChaining="ChainingModeCBC" hashAlgorithm="SHA512" saltValue="VmtFChBOLtVyZIO0PKpWYQ==" encryptedVerifierHashInput="4iCxfYahy+Rzjlt2SSoRuA==" encryptedVerifierHashValue="R8V4IrM4UfARuaLemcsLpxfIajl3vqtEiD4KHkqzBvgTfJLDv42HN7dB/9Xy1YhfETRFJOeSQCN3QDfoN6wPMg==" encryptedKeyValue="vDeqqIywPyca5i+JX9xvPXnzeP/kjx6fThMZFipNjtY="/></keyEncryptor></keyEncryptors></encryption>