You have a bug for no months.
Anyone using Windows 11 may have to face a distracting problem. After Microsoft released the 24H2 version update from late August (KB5064081) and then the September update (KB5065426), it appeared that the push contained a bug that prevented many apps from playing DRM or HDCP-protected videos as usual.
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This work, people who still watch Blu-ray, DVD or use a card to watch digital TV on a PC should be a little uncomfortable because instead of watching a real disc, they find a black screen, a backlog, or a copyright warning instead.
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This is due to Enhanced Video Renderer (EVR) working with DRM / HDCP. After updating, there is a mischeck, so it can't play the files as it should, but there is still some good news because streaming services like Netflix, Disney + or YouTube are not affected. It can also be viewed normally. It only plays media from discs or TV cards.
In fact, DRM (Digital Rights Management) is a technology to protect copyright, prevent copying or republishing. Like Blu-ray or eBook, it is used to ensure that only genuine buyers play or read. It sounds good, but sometimes it becomes a double-edged sword, because people who legally buy it are screwed up when the software has bugs like this.
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Microsoft has confirmed that it has acknowledged the problem and is speeding up the patch. It is expected to be released in the next round of updates. While watching movies on Blu-ray, DVD, or TV on digital cards, anyone who needs to avoid the update.
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Source: Neowin

































































































