ManyCam version 4.1.2.3 is considered one of the most stable and popular "legacy" releases of the webcam software. Released during a transitional period for the software, it is often sought after by users who prefer the classic interface over the modern, subscription-heavy design, or by those running older hardware (Windows XP, Vista, or older Windows 7 machines) that cannot handle the resource-intensive newer versions.
Once you have downloaded the installer (usually named something like ManyCamSetup-4.1.2.3.exe), do not run it yet. Download Manycam Old Version 4.1.2.3
Old installers are a common vector for trojans because users disable antivirus to run "cracks" or legacy software. ManyCam Version 4
Fix:
.exe file you just downloaded.Paid but abandonware. You can find version 7.0.2.9 on archive.org. It supports many effects and runs on Windows 7/10. Ensure ManyCam is running before opening Zoom
Yes, the software itself is free to download. However, the free version includes a watermark on the output video. A paid license removes the watermark and unlocks higher resolution recording.