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A Basic Application Could Not Be Started Wincc 7.5 ^new^ Jun 2026

Check its status. If it is stopped, right-click it and select (or Restart if it is already running). Ensure the Startup type is set to Automatic .

Troubleshooting "A Basic Application Could Not Be Started" in WinCC 7.5

The "A Basic Application Could Not Be Started" error in Siemens WinCC 7.5 often stems from Windows compatibility issues, corrupted MS SQL Server instances, or license verification failures. Key solutions include applying the latest WinCC updates, running the "Reset_WinCC.vbs" tool, and verifying that the computer name lacks special characters. For more troubleshooting, visit Siemens SiePortal .

The "A basic application could not be started" error message often appears when creating a new project or opening an existing one. It may be followed by additional phrases like "please check your software license". The error can also block the activation of a project's runtime environment. A Basic Application Could Not Be Started Wincc 7.5

As noted, SQL Server is the backbone for WinCC's data management. The specific service you need to check is SQL Server (WINCC) . If this service is stopped or fails to start, WinCC will be unable to perform any project-related tasks. The solution is often as simple as manually starting the service and setting it to start automatically. In more severe cases, the SQL Server installation itself may be damaged and require repair.

The logged-in Windows user is not a member of the required local security groups ( SIMATIC HMI or SQLServerMSSQLUser$ComputerName$WINCC ).

: Points toward project-specific configuration file corruption. Check its status

WinCC requires specific local Windows permissions to run applications and communicate with the SQL database.

Before diving into the fixes, it helps to understand why this error occurs. WinCC 7.5 relies on a complex architecture of Microsoft Windows services, SQL database instances, and specific user permissions. The most common triggers for this error include:

If you are accessing a multi-user project and the server is offline, or if the network share is unreachable, the local client cannot start its basic applications. Troubleshooting "A Basic Application Could Not Be Started"

In the context of WinCC 7.5, “basic applications” refer to core executable services and subsystems that the software relies upon to function. These include:

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WinCC relies strictly on Windows local user groups to manage background process permissions. If your user account loses these permissions, the basic applications will fail to start.

If it asks for a "Blue" or "Red" network, ensure your primary interface is highlighted. 5. User Group Permissions

Ensure that your system meets the minimum requirements for running WinCC 7.5. Verify that: