Unlike modern cloud-based systems (Ring, Arlo), MultiStar H.264 DVRs require a specific local client. You cannot use "VLC Player" or "Windows Media Player" to decode the proprietary .dav or .264 file formats produced by these machines.

If you need specific drivers or firmware for older DVR cards: APK Download for Android | Aptoide - Multistar Cloud

Many Multistar units use the XMeye platform architecture. If this is the case for your unit, the generic XMeye CMS software is often more user-friendly than the original disc that came with the box.

I can give you the for the correct software.

The original CD usually contains:

After installation, restart your PC. If you are connecting a USB mouse to the DVR via a video dongle, disable USB selective suspend in Power Options to prevent the DVR from disconnecting.