Some of the imported iPhone photos and videos are likely in HEIF/HEIC (photos) or HEVC (videos) format. When Windows or the Photos app cannot handle these formats correctly, it shows errors like “this file is not supported” or “You need an extension to use this file.”
Since HEVC/HEIF extensions are already installed and the issue persists, use one of these supported workarounds:
- Re‑import or resend with automatic conversion
- On the iPhone, many apps and transfer methods can automatically convert HEIC/HEVC to more common formats (JPEG/MP4) when exporting.
- Connect the iPhone to the PC again and copy the photos/videos over; or email the problematic files to an email account and save them on the PC.
- Note: Camera/Photos settings on the iPhone may need to be changed so that it converts to compatible formats when transferring or emailing. If this does not work, use the next options.
- Use OneDrive to convert photos
- Upload the iPhone photos to OneDrive (from the iPhone or PC).
- OneDrive can automatically convert HEIF/HEVC photos to a more compatible format when accessed from Windows.
- After upload, open or download them from OneDrive on the PC.
- Confirm the files are actually on the device (not only in iCloud)
- When importing directly from the iPhone, ensure the photos and videos are stored locally on the device, not only in iCloud. If they exist only in iCloud, import them using iCloud for Windows instead of USB import.
- If using Photos/Photos Legacy to view
- Photos Legacy supports common formats like JPEG, PNG, GIF, BMP, TIFF for photos and MP4, MOV, AVI for videos. If a file does not open even after conversion, verify that it is in one of these supported formats.
If, after trying re‑import/email and OneDrive conversion, some files still show as unsupported, they may be corrupted from the export and need to be re‑downloaded from the iPhone or iCloud.
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