Syncthing Trayzor has not been updated for a while. Syncthing Tray is the one to use now.
How to install:
Open CMD and enter these commands
winget install -e --id Martchus.syncthingtray
winget install -e --id Syncthing.Syncthing
The install is in %localappdata%.
Better to locate the Syncthingtray.exe with EverythingSearch to make the shortcut.
Here is the whole path:
"C:\Users\George\AppData\Local\Microsoft\WinGet\Packages\Martchus.syncthingtray_Microsoft.Winget.Source_8wekyb3d8bbwe"
Syncthingtray.exe will not be in the Start Menu.
Copy it and paste as a shortcut into
Winkey + r
%USERPROFILE%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs
Start Syncthing. Tray's icon will be in the Taskbar's group on the right.
Start it and set up Syncthing.
Do "Guided Setup"
Choose "Keep settings as they are"
Choose "Start at startup." It can be turned off in Task Manager.
Find "Add Remote Device" in the lower left and set it up.
Open "Folder" and edit
If you already have your folder set up, ignore offers to set up folders.