Installing older WinCC 7.5 base versions or early Service Packs (SP1/SP2) on modern Windows 10/11 updates (like 22H2) regularly triggers this crash.
A crash during a previous save can leave temporary or corrupted files ( .dcf files) in your project directory. Step-by-Step Solutions to Resolve the Error
Go to the project’s Archive folder and safely delete the temporary .ldf transaction logs if they are separate from the main .mdf database. Best Practices to Prevent Future WinCC Crashes
The error "" in WinCC 7.5 typically indicates issues with software compatibility, licensing, or corrupted project registration . Primary Troubleshooting Steps a basic application could not be started wincc 75 best
Troubleshooting WinCC 7.5: Resolving the "A Basic Application Could Not Be Started" Error
Add your Windows user account to the SIMATIC_HMI group. Steps: Open Computer Management ( compmgmt.msc ). Navigate to Local Users and Groups > Groups . Double-click SIMATIC_HMI . Click Add... and enter your Windows user name. Restart the computer . 3. Check Network Adapter Binding (Terminalbus)
Navigate to the WinCC installation directory (usually C:\Program Files (x86)\Siemens\WinCC\bin ). Locate and run as an administrator. Restart your computer and try opening WinCC again. 3. Check SQL Server (WinCC Instance) Installing older WinCC 7
Drawing from hundreds of real-world user reports and Siemens official responses, the following causes are most common:
Select the tab and locate the WinCC RT / RC V7.5 license.
Click . Wait for the utility to terminate all stuck background processes (like CCDmRuntime.exe , ScriptOS.exe , etc.) and refresh the environment. 4. Delete Corrupted Project Cache Files Best Practices to Prevent Future WinCC Crashes The
If it is stopped, right-click it and select (or Restart if it is already running). 2. Run the SIMATIC Security Controller
Once you identify the failing module, download the relevant update from Microsoft or Siemens Support.
