HEIC format files are not supported (jpg/jpeg and png formats are). Below is information on how to move from HEIC to JPEG.
New photos - change your Apple phone settings
Under Settings, go to Camera > Formats to switch to "Most compatible" mode. New photos will revert to the jpeg format.
Photos that need to be uploaded - convert your images at transfer
If you are transferring photos directly to your computer, go to Settings > Photos and ensure that the "Transfer to Mac or PC" option is set to Automatic. This will convert the photos to .jpeg format at the time of transfer.
Photos already received - convert your images on your computer
Use a third party tool to convert your HEIC files to jpeg. Consult the following third party article for a list of tools to convert your HEIC photos to jpg: https://www.maketecheasier.com/convert-heic-jpg-windows10/ Note that we do not formally endorse any of the methods outlined in the article so do check into them independently before installing any applications or uploading your photos.