Use a strong, complex password. If the password is forgotten, there is no built-in way to recover the files.
Modern WinRAR versions use 256-bit AES encryption, which is a global, industrial-strength standard for data security. Download Folder Lock rar
Ensure WinRAR is installed on your Windows machine. Use a strong, complex password
Without the correct password, the contents of the RAR file remain inaccessible. How to Lock/Password-Protect a Folder (RAR) Ensure WinRAR is installed on your Windows machine
A serious vulnerability (CVE-2023-38831) affected versions of WinRAR prior to 6.23. Always use the latest version to prevent malware exploitation.
In the "Archive name and parameters" window, click the "Set password" button.
This informative write-up covers the use of to password-protect, lock, and encrypt folders (creating .rar archives) to secure sensitive data from unauthorized access. What is a Locked/Password-Protected RAR File?