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Demo Mode: If installed without a valid license, WinCC automatically enters Demo Mode. In this mode, the configuration software (Explorer and editors) will terminate after one hour of use, and Runtime will display a license request dialog every 10 minutes. While the phrase "WinCC 7
Legacy Service Packs: Note that Service Pack 2 exists for older versions, such as Service Pack 2 for WinCC V7.0, which may be the source of version number confusion. System Requirements for V7.4 In this mode, the configuration software (Explorer and
Service Pack 1 (SP1): You can download Service Pack 1 for WinCC V7.4 for free from Siemens, provided you already have a basic license for V7.4.