Thank you again, Svante. I’m becoming convinced that Advanced Encryption Package was on my computer at some time and performed the first encryption of the files in question. I think Axcrypt performed a double encryption on them; that woud account for “axx” in the extension. I just hope I can get AEP somewhere & use it to help with the decryption.
I appreciate your help. You’ve led me to the likely solution of my problem.
P. S. What I still don’t understand is the double futile extension—the “aep.axx.” It makes it seem that the files with that extension are doubly encrypted.