Trying to Open png file.

[Phantom54]

I am using GIMP 2.10.14 in Windows 10 64bit.  For whatever reason, GIMP will not open any png files.  This includes those I have created by exporting as png and then trying to open them back into GIMP.  Other packages seem to have no trouble opening them.  If I use other packages to convert png files to jpg, GIMP will open them.

I have tried completely uninstalling and reinstalling GIMP and I have tried to bring png files into GIMP with - Windows 'open with', and GIMP open file.  Nothing works.  It appears to be a permission problem.  See below.

Please help.