Thanks for the reply.
I used Windows 10 system cleanup to try and get rid of unused and redundant files. It didn't help.
I don't normally alter the metadata, and I work exclusively with simple .jpg files.
In the past, the occurrence always annoyed me, but I just ignored it and kept going with whatever I was doing.
I explored the problem a little more, just now. The error pops up every time I save a file, or save as. However, I hadn't realized that it only occurred when working on/saving files that are on my home network storage devices. That's the location where all the raw .jpg file are initially stored, and where all my project files are stored.
The error doesn't seem to pop up when saving to a USB thumb drive or to the C: drive.
I haven't noticed or experienced any other weirdness reading and writing files to the network drive in any other software.