In newer versions like , certain graphical elements (like SVGs) might disappear in the Viewer RT if "Classic Mode" is active.
: Ensure the OS version on the HMI device matches the configuration software version. Verify SQL Server Settings SQL Server Configuration Manager SQL Server Services , right-click SQL Server Agent (WINCC) Properties , and change the "Log on as" setting to Network Service Manual Transfer (Workaround)
WinCC Viewer RT and WebNavigator rely heavily on ActiveX controls and legacy web frameworks. Incorrect browser security settings will block the initial download of the components from the WinCC Web server. Enable Active Scripting and ActiveX Controls Open the on the client PC. Click on Internet Options and navigate to the Security tab. Select Trusted Sites and click the Sites button.
Check if the client installation files ( NavigationClient.msi or .exe ) exist and match the size specified in the Siemens product notes. wincc viewer rt download fix
Here is a structured approach to developing a feature to address this, focusing on common causes like broken links, incompatibility, or licensing errors.
If configuration files are correct but the viewer still crashes or fails to open, a corrupted installation or software version mismatch is the likely cause. Step-by-Step Reinstallation Fix
Enable all options related to and set Downloads to Enable . In newer versions like , certain graphical elements
A known bug in older WinCC versions (e.g., before Update 14) causes the WinCC Viewer RT download service to hang when symbol rates exceed 500 tags.
Are the client and server on the , or are they separated by a router/VPN? Share public link
Navigate to the following path on the client PC: C:\Users\ \AppData\LocalLow\Siemens\SIMATIC.WinCC\WebNavigator\Client\ Incorrect browser security settings will block the initial
The client machine needs a specific version matching the WinCC Server.
Ensure the target folder on the server has proper and NTFS permissions .
: Surprisingly, some users have fixed viewer "freezes" by simply changing or reconnecting their default Windows printer