To schedule a query in Winshuttle Server, a password is required. Set a system account user password on the central site
This issue appears If the System Account has not been set ; perform the below steps to resolve the issue
Steps for 10X
1) Go to Central Site
2) Winshuttle Central Admin
3) Query- Preferences and then add the System Account there.System Account can be Customer's user id too.
For Foundation 11 and 12 follow steps in Article mentioned below.