How can I get rid of pagefile.sys on C drive?

I'm having a hard time maintaining available space on my C drive (a 128GB SSD), it's usually hovering around 5GB to nearly nothing while I'm using my graphics editing program, Corel PaintShop Pro X7. I can't work long on it before getting a message that available space has dropped to critical levels, at which point the best I can do is leave the message window open while I empty as much of my %temp% directory as I'm allowed (as administrator), then go back to PSP and close the message window in order to continue working.

I have (if I'm understanding this correctly) my Virtual Memory configured to put the entire paging file on my larger internal D drive (which holds most of my user files/documents), but the attached WinDirStat report indicates pagefile.sys usage on C of 16GB. The attached Virtual Memory window indicates, erroneously it would appear, nearly 20GB free on C (Windows Explorer indicates about 2.5GB currently free).

What am I missing here? And does anybody see anything unusual in the WinDirStat usage figures?

Thank you for any assistance!

I would set a custom size on C with 100 MB initial and max to see if that changes the size of the file.

I would run a System File Check (up to 3 times) to see if there are any errors that can't be fixed.
SFC /SCANNOW Command - System File Checker

Thank you David, I'll give that a try!

I do run SFC /SCANNOW fairly often, errors are reported as fixed if found.

Thank you David, excellent advice ... Virtual Memory on C set as you suggested, pagefile.sys appears to be gone and available space on C is now 26GB.

Thank you!! :)

You're welcome and glad to see you got it solved !