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Some antivirus programs flag TV tuner drivers as suspicious. Temporarily disable real-time protection, but re-enable it after installation.

If you encounter any issues during the update process, try the following troubleshooting tips: mstv59-version 4.0 software download

While older releases relied on system codecs, Version 4.0 bundles LAV Filters (x64) and supports hardware decoding via Intel QuickSync, NVIDIA CUDA, and AMD AMF. This means smoother playback of HEVC (H.265) and AV1 content when available through your tuner. Some antivirus programs flag TV tuner drivers as suspicious