A Basic Application Could Not Be Started Wincc 7.5 <2024>

Sometimes the compressed project archive is the problem.

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. A Basic Application Could Not Be Started Wincc 7.5

This single action resolves the majority of cases. Sometimes the compressed project archive is the problem

Why this works: WinCC 7.5 needs to write to protected system folders (like C:\ProgramData\Siemens\) and register COM objects at runtime. This single action resolves the majority of cases

Try the following solutions in order. Test after each step.

If the above fails, the error might live in your project’s local configuration files.