Windows syncronisation

Hello to all,
i had a problem with sync under WIndows. Sync under Android works fine. Under Windows with the same options i got the following error:

Error. Please check that URL, username, password, etc. are correct and that the sync target is accessible. The reported error was:
PROPFIND : Unknown error 2 (401): 401 Authorization Required

Authorization Required

This server could not verify that you are authorized to access the document requested. Either you supplied the wrong credentials (e.g., bad password), or your browser doesn’t understand how to supply the credentials required.

(Code 401)

Is there an idea?

It might help if you describe the service you’re using to sync the two devices.

Problem is solved!! I made a mistake!

Thanks to all!