Help! All BMP files with transparency can not be read anymore !

I just bought a new computer and OS is windows 11

I downloaded Unity and tried to import my old project.

I tried both Github pull my project and import the entire Unity project from my old computer as an exported package.

In both cases, importings were successful and my game is executable.... but all my BMP images with transparency are not readable (If a BMP is filled with RGB colors, it is okay, but BMP with transparency parts are not working)...If I double click the image, it can still open by image review (So the image file itself is definitely not damaged)

If I try to import a new BMP image with transparency, it will say: File could not be read.

This happens to all Unity versions I tried on this new computer.

I suspect this has something to do with windows 11...