While am adding new blank from services view its not creating the Visio file. but it is possible for Elements. why its happen like that?
The behavior of the visio files indeed changed since 10.0.11 but normally this functionality should still work fine, i couldn't reproduce it at least on my system
Some more info on how to configure the blank pages and the recent changes made:
Editing a visual overview in DataMiner Cube | DataMiner Docs
In this page you can find the "templates" we automatically assign, maybe someone did an overwrite on the one for services?
DataMiner Visio templates | DataMiner Docs
My suggestion would be to try to set a new default and see if it works fine again.