Use WinCC WebNavigator with a Supported PCS 7 Client and Browser
The reported PCS 7 V7.1/WinCC WebNavigator V7.0 system cannot be treated as compatible with a Windows 11 client. Siemens' WebNavigator V7.0 manual lists Windows Server 2003 SP2/R2 and Internet Explorer 6.0 SP1/SP2 or 7.0 for the client environment; it does not list Windows 11 or modern browsers. Use a version-matched, supported client/server and operating-system combination, or plan a tested PCS 7/WinCC upgrade.
Table of Contents
- Check the installed WebNavigator release
- Compare against the version-specific matrix
- Choose a supported design
- Verification
- Limitations and Operational Precautions
- Technical References
- Related Articles
- Related Tags
- Engineer FAQ
Check the installed WebNavigator release
Record the WebNavigator server and client versions, the WinCC/PCS 7 release, and the client operating system/browser. The message “Your client OS or your Client Web-Browser are not supported” is consistent with a compatibility mismatch; changing browser settings cannot add an unsupported OS/browser combination to the product's release matrix.
Compare against the version-specific matrix
The WinCC/WebNavigator V7.0 System Manual lists Windows Server 2003 SP2 or Server 2003 R2 SP2 and Internet Explorer 6.0 SP1/SP2 or 7.0 in its requirements. It does not list Windows 11. The thread reply says IE11 is incompatible with V7.1, but the V7.0 manual already establishes that IE11 is outside its documented browser list.
Choose a supported design
Use a WebNavigator client and server pairing documented for the same product generation and supported operating systems. If Windows 11 is a requirement, plan an upgrade to a currently supported PCS 7/WinCC release and validate the migration in a test environment. Do not rely on an unverified WebViewerRT workaround.
Verification
After selecting a supported configuration, confirm the client installation completes, the server accepts the client, and process values and alarm displays work under the intended user permissions.
Limitations and Operational Precautions
The source does not give the WebNavigator server's full version/update, exact WinCC V7.1 SP level, or browser build. PCS 7 V7.1 on Windows XP and WebNavigator V7.0 are legacy components; compatibility must be checked against their own release documentation.
Technical References
- Siemens, WinCC/WebNavigator V7.0 System Manual, section 1.3, client OS/browser requirements: https://support.industry.siemens.com/cs/attachments/37436594/WebNavigatorInformationSystem_en-US.pdf
- Siemens, WinCC Basic Options (WebNavigator) V7.4 SP1 System Manual, client requirements: https://support.industry.siemens.com/cs/attachments/109746337/WinCC_BasicOptions_en-US_en-US.pdf
Related Articles
Related Tags
Engineer FAQ
Can WinCC/WebNavigator V7.0 run on Windows 11? The cited V7.0 manual lists Windows Server 2003 SP2/R2 and Internet Explorer 6 or 7, not Windows 11; this combination is unsupported by that documentation.
Does WinCC V7.1 on Windows XP support a Windows 11 browser client? No applicable compatibility documentation was found for that client/server combination; do not infer support from browser installation alone.
Is Internet Explorer 11 compatible with WebNavigator V7.0? The V7.0 manual lists Internet Explorer 6.0 SP1/SP2 or 7.0, so IE11 is outside that documented support list.
Can WebViewerRT avoid browser problems? A forum suggestion mentions it, but it does not establish compatibility with PCS 7 V7.1 or Windows 11.
What is the practical solution? Use a supported, matched WinCC/WebNavigator server and client combination on supported operating systems, or plan a version upgrade.
Should the client and server versions match? The applicable manuals specify server/client compatibility; keep versions within the documented pairing.
Can I bypass the browser check? Bypassing a support or client check does not make an unsupported configuration reliable or safe for operation.
What versions should be recorded? Record PCS 7, WinCC/WebNavigator server and client, browser, and operating system versions.
Will an upgrade preserve project behavior? Compatibility and migration depend on versions and project content; test the supported upgrade path before production.
Can this old configuration be fixed by changing Internet Explorer settings? The source's table applies to WebNavigator V7.0 client requirements; its listed browser versions do not include modern Windows 11 browsers.