Downloading software from unofficial sources like sigma4pc.com —which often hosts "cracked" or "pre-activated" software—exposes your system to several dangers:

Downloading software like from unofficial third-party sites such as sigma4pc.com or via .rar archives is highly discouraged due to significant security risks. Instead, you should always download VLC directly from the Official VideoLAN Website or the Microsoft Store . The Risks of Unofficial Downloads

: Official versions of VLC undergo regular security scrutiny and updates. Third-party versions may be outdated and contain unpatched vulnerabilities.

: Malicious apps can drain system resources, reduce battery life, and cause frequent crashes or unauthorized remote access. Why Choose the Official VLC? VLC - Download and install on Windows | Microsoft Store