I have also encountered the same issue before. A bunch of HEIC photos on Windows 11 could not be opened. Later, I used TunesBro HEIC Converter, you don’t have to convert them one by one manually, and the quality of the converted images is also good. If you need an efficient batch conversion tool, I strongly recommend trying this! I found it in Apple discussion: https://discussions.apple.com/thread/255515854?sortBy=rank https://techcommunity.microsoft.com/discussions/convert-heic-to-jpg-without-losing-quality
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