Upon seeing this post, I started up Joplin desktop on Windows 7 64-bit to see what version I was running. Upon startup, it prompted me to download a new update, so I told it to go ahead. It retrieved 2.12.7. After it finished installing, I clicked the start option, and now Joplin will not start:
"The procedure entry point DiscardVirtualMemory could not be located in the dynamic link library KERNEL32.dll."
I looked at the release notes, and I don't see anything that says Joplin is no longer compatible with Windows 7. Back to 2.11.11.