Hello Saba_149,

The Runtime screen resolution is different compare to your display resolution.

Kindly check the resolution of your system and match the same using layout option in "OS project Editor" inside WinCC explorer. (Find the attached screenshot)

OS Project Editor

The OS Project Editor inserts pre-configured pictures, script actions, and tags in the PCS 7 project. This editor also specifies the typical settings for a PCS 7 project.

When the OS Project Editor is run, the following tasks are completed:

• Creation of the PCS 7 message classes and message types
• Creation of the message blocks
• Creation of the PCS 7 messages
• Configuration of the startup list and the start screen
• Copying of the Dynamic Wizard and the actions
• Creation of tags for controlling the runtime behavior
• Copying of the screen layout
• Creation of the runtime configuration file

Behavior of the project editor

When an OS project is created in the PCS 7 ES, the OS Project Editor is called in the background and initialized with default settings. If you want a configuration other than the default configuration, start the OS Project Editor via WinCC Explorer and configure your desired project settings.

When you create a project in WinCC, you must start the OS Project Editor in WinCC Explorer. The OS Project Editor must run before the User Administrator is opened; otherwise the User Administrator will be initialized with the authorization levels of WinCC.

The first time the OS Project Editor is called, the default settings are displayed. A suitable layout for the runtime user interface is selected on the basis of the screen resolution and project type. If a suitable layout is not found, the OS Project Editor selects the first layout from the list of available layouts in the "Layout" tab.

I hope it helps you!