Possibly , if doing frequent scans, especially in the case of using multiple devices, or if the MFP is using the same login as the person logged into the Win 7 PC, you could just increase this number to the max.
Image may be NSFW.
Clik here to view.
Beyond that you would need to get into the Event Viewer on the PC side and check the AV/Firewall to see why the Server is failing the login.
