| Category | Typical cause | |----------|----------------| | | Firewall, wrong IP, missing host entries, subnets mismatch | | Runtime mismatch | WinCC Viewer RT version ≠ TIA Portal project RT version | | Missing prerequisites | .NET, VC++ redist, or WinCC RT Viewer not installed / corrupted | | Access rights | No admin rights on target, missing DCOM permissions | | Project corruption | Incomplete compilation, invalid screen objects, or language settings |
Open "Simatic Shell" on both the server and the client. Ensure they are on the same terminal bus and can "see" each other in the shell window. Fix B: Configuration File (.pnc) Issues wincc viewer rt download fix
Disable "Block all incoming connections" in the Windows Firewall or specifically allow File and Printer Sharing Run as Admin: In some cases, launching WinCCViewerRT.exe explicitly as an Administrator bypasses specific profile-related connection blocks. Siemens SiePortal 4. Display & SVG Fixes (Black Screens) | Category | Typical cause | |----------|----------------| |