When I’m syncing WhatsApp folder using Syncthing From Android 12 to Windows 10, I get the following errors:
I’ve read somewhere that this error occurs because Windows doesn’t allow files that end with a dot, but when I copy files from Android to Windows via USB, the files transfer just fine.
The problem is that Windows Explorer cannot deal with such files. Even if you do manage to transfer them somehow, you’ll be left with files that cannot be deleted normally (i.e. using the Explorer interface and not special command line commands). That’s why Syncthing doesn’t allow them to sync to Windows devices.
There’s no workaround. You need to either to rename the files on Android, or ignore them if you only want to clear the errors in the Syncthing GUI. The files themselves still won’t be synced obviously.
So far I’ve only seen files with such naming convention in the Sent Documents section of WhatsApp. Since the documents sent already have a copy in some other folder as well, ignoring such files aren’t an issue.
If they decide to use this format in more critical files like the ones which backup all chat data, then this Syncthing method of backup wouldn’t be of much use as it couldn’t be restored.