Q: I can’t validate my Windows Sync Client. What do I do?
A: Please try to exit/restart MobileNoter. If it does not help - reboot your computer and look, if the Validate button becomes active. If this does not help either, please delete "C:\Documents and Settings\-username-\Local Settings\Apps\2.0" folder (it contains all ClickOnce applications' settings) and then re-validate your account in MobileNoter Windows Sync Client.