Foxmarks: Error: Unauthorized

From Foxcloud Wiki

This error means that your username and/or password are invalid on the server you are using. Check your username and password in the Foxmarks Settings dialog and try again. If this error persists, you may need to create a new account on the server.

Note that creating an account on this Wiki is unrelated to creating a synchronization account for Foxmarks. If you haven't created a synchronization account, you can use the Foxmarks Setup Wizard to help you. See the FAQ for information on starting the Setup Wizard.