A Basic Application Could Not Be Started Wincc 7.5 Instant
The .mcp (Master Control Project) file or its associated log files became corrupted during an improper shutdown.
Right-click on WinCC Explorer → Run as administrator
Close all WinCC applications and run the Reset_WinCC.vbs script located in the WinCC installation directory (usually under Siemens/WinCC/bin ). Restart your computer after it finishes .
Note: If the SQL service fails to start, you may need to repair your SQL Server installation via the Windows Control Panel using the original WinCC installation media. 4. Reset the WinCC Project (Reset_WinCC.vbs) A Basic Application Could Not Be Started Wincc 7.5
How to Fix "A Basic Application Could Not Be Started" in WinCC 7.5
Follow these steps in order to diagnose and resolve the issue. Step 1: Verify Windows and WinCC Compatibility
Which are you currently running?
A command prompt window will appear, terminating active WinCC tasks. Wait until it displays a message confirming completion, then restart your PC. 5. Repair the WinCC Installation
If you have tried steps 1-7 and still see “A basic application could not be started”:
Never rename the Windows computer after installing WinCC 7.5, as the SQL Server instance binds directly to the original hostname during setup. To help diagnose this issue further, tell me: Note: If the SQL service fails to start,
Click and follow the instructions to repair the installation. 3. Summary of Solutions Likely Cause Error on Windows 10/11 Compatibility Update to WinCC 7.5 SP2 U15 "Check License" error License missing Re-register license in ALM No specific error Corrupt process Run Reset_WinCC.vbs Error at startup Permissions Add user to SIMATIC_HMI
If background processes are hung or frozen in memory, they can block new application threads from starting. Siemens provides a built-in utility script to force-close all hung components. Close all Siemens windows.
Below is a guide to the most effective troubleshooting steps, ranked from quick fixes to more intensive system repairs. 1. Check OS and Software Compatibility Step 1: Verify Windows and WinCC Compatibility Which
Right-click on the Windows Start Button and select . Navigate to Local Users and Groups -> Groups . Find the SIMATIC_HMI group.
If the above steps fail, the SQL Server instance used by WinCC might be corrupted. Go to -> Programs and Features . Select SIMATIC WinCC V7.5 .