Ensure the project folder resides on a local hard drive (usually C:\ or D:\ ). Running projects from USB flash drives, external hard drives, or mapped network paths will trigger startup failures.
The most common culprit is a missing or incompatible license. WinCC 7.5 requires specific "RC" (Runtime and Configuration) or "RT" (Runtime) licenses. Open the Automation License Manager (ALM) . Check if your licenses are visible and "OK."
If your WinCC project folder was moved or copied from another machine, the "basic application" might fail because it doesn't have permission to write to the project database. Right-click your project folder. Go to Properties > Security . Ensure the "SIMATIC HMI" user group has Full Control .
Missing dynamic link libraries (DLLs) or interrupted Windows Updates can corrupt the software binaries. a basic application could not be started wincc 75
Have any or new software packages been installed right before this error started? Share public link
Ensure the correct network adapter is selected (the one physically connected to the PLC or server network). 5. Windows Updates and Compatibility
Wait for the command-line script to terminate all active background processes safely, then reboot your machine. Core Troubleshooting Summary Potential Root Cause Specific Indicator Primary Resolution Step Windows user lacks database rights Add user to the local SIMATIC_HMI group. SQL Server Interruption SQL Server (WINCC) service is stopped Ensure the project folder resides on a local
WinCC relies heavily on a dedicated Microsoft SQL Server instance (usually named WINCC ). If this instance fails to start, WinCC cannot load project data.
Right-click your license and select to ensure it isn't corrupted. 2. Reset the WinCC Project (CCCleaner)
. Here is a review of why this happens and how to fix it based on community consensus from Siemens SiePortal and technical forums. Siemens SiePortal Common Root Causes SQL Server Corruption WinCC 7
Not typically the cause, but having all Windows updates installed is a prerequisite for a stable WinCC environment. Missing .NET Framework components or outdated system files can contribute to the error.
The logged-in user lacks membership in the mandatory Siemens local user groups.