A Microsoft file hosting and synchronization service.
Hello,
You can absolutely do this using OneDrive which is already built right into Windows. You just need to find your main Microsoft Money data file which usually ends in .mny and move it directly into your OneDrive folder on your desktop computer. Give it a minute or two to sync to the cloud. Once it finishes uploading you can jump over to your laptop, let OneDrive sync the changes there, and then open that exact same file straight from the laptop OneDrive folder. From then on whenever you add things it will sync across both machines automatically.
Just a massive heads up since Microsoft Money Plus is older software and wasn't built for modern cloud syncing. You need to be extremely careful to completely close out of the program on one computer before you ever open it on the other one. If both computers happen to have that file open at the exact same time you run a big risk of file corruption or OneDrive splitting it into conflicting copies and you could lose your newest entries.
Let me know how that works out for you!