The support for OneDrive for Business has been added by Add support for OneDrive for Business · gilbertchen/duplicacy@d26ffe2 · GitHub
The use the new backend, specify the storage url in the format of
odb://path/to/storage. You must first obtain a token file by visiting OneDrive for Duplicacy.
Currently you’ll need to compile your own binary from the latest source to use this backend. I can provide pre-built binaries on request.