@Bitcoin325 said in Hardware Secure Decryption not suppport on opera?:
Hardware Secure Decryption can be enabled and works normally on Chrome, allowing Netflix to achieve 4K HDR. However, although this feature can be enabled in Opera's flags, it does not work
Yeah, that’s a known thing, Opera uses the same base as Chrome but doesn’t have proper Widevine L1 support, so even if you enable hardware secure decryption, it won’t actually work for Netflix 4K. Best bet is to just use Chrome or Edge for that.