Photoshop can't export to replace an existing file (weird permissions issue)
So I have a strange issue. I just did a clean install of windows 10 home. The first thing I downloaded other than drivers is photoshop.
I connect my external hard drive (a USB-C SSD formatted as ex-FAT), open a photoshop file "blah.psd" on it, and try to export the file to the same folder as a jpeg with the name "blah.jpg". Now, there is already file called "blah.jpg" in same folder (this is on the external drive), and normally it should just replace the file, but instead I'm getting the error:
"You do not have permission to save files to <PATH>\blah.jpg. Make sure that you have write access for this location, or select a different location."
This is strange because:
1. I'm running photoshop as administrator (explicitly right-clicked the photoshop app and selected "Run as administrator").
2. The file in question "blah.jpg" shows that its "Owner" is "Everyone".
3. I can export the same file as another name without issue. (Eg, I can export blah.psd as "blah2.jpg" without problem).
4. I can also delete "blah.jpg" without problem, and then I can rename "blah2.jpg" to "blah.jpg" without issue.
5. Even after doing this (exporting as blah2, deleting blah, and renaming blah2 to blah), I still cannot export to replace "blah.jpg" (which was created just now), and I get the same error.
6. Photoshop can "Save as" to replace blah.jpg. E.g., if I create a new jpg image, open it in Photoshop, and choose to save as "blah.jpg", then it will go through and the new image will replace blah.jpg.
7. Photoshop *can* export to replace jpg's on a local drive. Ie, if I copy the psd and jpg to say "blahlocal.psd" and "blahlocal.jpg" to a local drive, and try to export to replace, it goes through without issue. If I copy "blahlocal.psd" and "blahlocal.jpg" to another folder on the external drive, I again have the issue. So it seems to be an issue that is specific to the external drive when using the export function to replace.
In short, I seem to have full permissions on everything on the drive (though the drive is formatted in exFAT so I do not have a "security" tab when I right click -> properties). Photoshop can save-as to replace, but it cannot export to replace. The drive was initiated formatted when connected to my macbook pro back in January (running the latest version of Mac OS), and this is the first time I'm using it on my PC.
