Ensure the following ports are open for both Inbound and Outbound traffic on both the server and client machines:
Set to Allow .
Incorrect Internet Explorer or Internet Options security policies. wincc viewer rt download fix
| Port | Protocol | Service/Tool | |------|----------|---------------| | 102 | TCP | S7 Communication | | 135 | TCP | RPC Endpoint Mapper | | 1433 | TCP | SQL Server (WinCC DB) | | 50515–50520 | TCP | WinCC Download Service | Ensure the following ports are open for both
Some users report that the viewer only works when executed with administrative rights. While "WinCC Viewer RT" is a standard component
While "WinCC Viewer RT" is a standard component of Siemens SIMATIC WinCC for remote monitoring, users often encounter issues where the "download" or connection process fails. Fixing these issues usually involves addressing configuration mismatches rather than finding a missing download file. Understanding the Component