Operating System Compatibility Guide: Running SIMATIC PCS 7 V9.0 on Windows 10 Enterprise LTSC

In SIMATIC PCS 7 V9.0, official operating system compatibility with Microsoft Windows 10 is strictly restricted to Windows 10 Enterprise 2015 LTSB (64-Bit) for the base V9.0 release. Subsequent service packs expand support: PCS 7 V9.0 SP1 and SP2 support Windows 10 Enterprise 2015 LTSB and Windows 10 Enterprise 2016 LTSB (64-Bit). Modern Windows 10 Enterprise LTSC 2019 is not officially validated for PCS 7 V9.0/SP1/SP2; deploying LTSC 2019 or newer requires updating to SIMATIC PCS 7 V9.1. Installing PCS 7 on non-certified Windows builds voids standard Siemens support and causes SQL Server and driver failures. Confirm supported OS builds with an authorized Siemens distributor or the Siemens Industry Mall.

Executive Summary

Plant IT departments frequently establish corporate standards mandating the deployment of modern Windows 10 Enterprise LTSC releases (such as LTSC 2019 or LTSC 2021) across all industrial PCs. When attempting to install SIMATIC PCS 7 V9.0 on these newer Windows builds, engineers encounter setup blocks, SQL Server 2014 installation aborts, and driver communication failures. Siemens strictly validates PCS 7 against specific Long-Term Servicing Channel (LTSC/LTSB) releases to prevent unexpected Windows updates from breaking automation real-time subsystems. This technical guide outlines the certified operating system matrix for PCS 7 V9.0, analyzes failure modes on unreleased Windows versions, and provides upgrade recommendations.

Architecture and Fundamental Mechanics

The operating system dependency architecture in SIMATIC PCS 7 links industrial software with specific Windows kernel interfaces:
1. Why Siemens Mandates Enterprise LTSB / LTSC:
Standard Windows 10 Pro or Enterprise Semi-Annual Channel (SAC) builds receive periodic feature updates (e.g., 20H2, 21H1) that alter networking protocols, DCOM security policies, and driver signing rules. LTSB/LTSC (Long-Term Servicing Channel) builds receive only security patches, guaranteeing a frozen, predictable operating system baseline for 10 years.
2. Version-Specific OS Certification Matrix for PCS 7 V9.0:
- PCS 7 V9.0 (Base Release, 2017):
- Certified OS: Microsoft Windows 10 Enterprise 2015 LTSB (64-Bit, build 10240).
- Server OS: Windows Server 2012 R2 Standard Edition (64-Bit).
- PCS 7 V9.0 SP1 / SP2:
- Certified OS: Windows 10 Enterprise 2015 LTSB & Windows 10 Enterprise 2016 LTSB (64-Bit, build 14393).
- Server OS: Windows Server 2016 Standard Edition (64-Bit).
- Windows 10 Enterprise LTSC 2019 (Build 17763):
- Not certified for PCS 7 V9.0 base/SP1/SP2. Certified support began natively with SIMATIC PCS 7 V9.1 and Windows Server 2019.
3. Failure Mechanisms on Unsupported Windows Builds:
- Microsoft SQL Server 2014 SP2 (WinCC database) fails to initialize instance services due to altered Windows permission models.
- Low-level communication drivers for CP 1623 and Softnet-IE fail WHQL driver verification in newer Windows builds.
- SIMATIC Security Controller fails to apply DCOM and firewall templates, causing inter-process RPC communication dropouts across Simatic Shell.

Step-by-Step Implementation Procedure

Verify Windows 10 Build Version:
a. On the target industrial PC, press Win + R, type winver, and press Enter.
b. Inspect the OS version and build number:
- Build 10240: Windows 10 Enterprise 2015 LTSB (Supported on PCS 7 V9.0 Base/SP1/SP2).
- Build 14393: Windows 10 Enterprise 2016 LTSB (Supported on PCS 7 V9.0 SP1/SP2/SP3).
- Build 17763: Windows 10 Enterprise LTSC 2019 (Requires PCS 7 V9.1).
- Non-LTSB builds (e.g., Windows 10 Pro, Home, or standard Enterprise): Strictly unsupported.
Consult the Online Siemens Compatibility Tool (Kompatibilitäts-Tool):
a. Access support.industry.siemens.com/kompatool.
b. Select 'SIMATIC PCS 7' -> Version 'V9.0' or 'V9.0 SP2'.
c. Select the exact Windows operating system build.
d. Confirm that the tool indicates 'Compatible' with green checkmarks.
Deploy the Correct Operating System Image:
a. For existing PCS 7 V9.0 installations, procure industrial PCs pre-installed with the certified Windows 10 Enterprise LTSB image (e.g., SIMATIC IPC547G with Windows 10 LTSB 2016).
b. Disable automatic Windows updates from consumer servers; route updates strictly through a local Windows Server Update Services (WSUS) server approving only Siemens-validated security patches.
Upgrade Pathway to PCS 7 V9.1 (For Modern LTSC 2019/2021 Hardware):
a. If plant hardware requires Windows 10 LTSC 2019, plan a software migration from PCS 7 V9.0 to PCS 7 V9.1.
b. PCS 7 V9.1 includes updated Microsoft SQL Server 2016 / 2019 and native 64-bit drivers certified for Windows 10 Enterprise LTSC 2019.

Verification

Run the PCS 7 V9.0 Setup: verify that the system prerequisite check passes with 0 operating system blocking warnings.
Complete installation: verify that Microsoft SQL Server, WinCC Explorer, and STEP 7 install cleanly.
Open SIMATIC Security Controller: click 'Repeat Settings' and verify that all firewall and DCOM policies apply with green status.
Open Automation License Manager: verify license keys display valid operational status.

Limitations and Operational Precautions

Bypassing the PCS 7 setup operating system check using registry hacks or compatibility flags results in runtime database corruption and voids all manufacturer technical support.

Engineer FAQ

Can I install PCS 7 V9.0 on Windows 10 Enterprise LTSC 2019?

No. Windows 10 LTSC 2019 is not officially certified for PCS 7 V9.0. Operating on LTSC 2019 requires upgrading to SIMATIC PCS 7 V9.1.

What is the difference between LTSB and LTSC?

LTSB (Long-Term Servicing Branch) was Microsoft's original naming for long-term builds (2015, 2016); it was renamed to LTSC (Long-Term Servicing Channel) starting with the 2019 release.

Can I run PCS 7 on Windows 10 Pro?

No. Standard consumer Windows 10 Pro and Home editions are completely unsupported due to uncontrollable feature updates and lack of enterprise security controls.