Wincc 70 Sp3 Update 1 Upd May 2026

SIMATIC WinCC V7.0 SP3 Update 1 is a maintenance release that provides software improvements for the WinCC V7.0 Service Pack 3 (SP3) and WinCC V7.0 SP3 ASIA platforms. Key Details and Requirements Installation Prerequisite : You must have SIMATIC WinCC V7.0 SP3 WinCC V7.0 SP3 ASIA already installed to apply this update. Delivery Method

• Redundancy Stability: Prior to UPD1, some users experienced delayed or failed automatic switchovers between redundant server pairs. Update 1 refined the internal heartbeat mechanism and data synchronization, reducing false failovers.
• Graphics System Performance: Addressed memory leaks in the Graphics Runtime, particularly when using complex faceplates or recurring screen windows. This reduced the need for periodic runtime restarts.
• Archive and Logging: Fixed a critical issue where high-frequency process value archiving could lead to database connection timeouts with Microsoft SQL Server (which WINCC bundles). UPD1 improved the SQL query handling for trend displays.
• OPC DA/HDA Connectivity: Resolved several COM interface timeouts affecting OPC (OLE for Process Control) Data Access clients connecting to the WINCC OPC server.
• Web Navigator: Improved session handling for thin clients, reducing the number of disconnected but un-released user sessions.

This update is not a standalone installation; it requires the base version of WinCC V7.0 SP3 to be pre-installed on the target system. wincc 70 sp3 update 1 upd

WinCC/WebNavigator: For web-based operator control and monitoring. SIMATIC WinCC V7

• Operating System: Windows 7 SP1, Windows 8.1, or Windows 10 (64-bit)
• Processor: Intel Core 2 Duo or AMD equivalent
• Memory: 4 GB RAM (8 GB recommended)
• Hard Disk Space: 10 GB free space