: You are testing Comfort Panel or Mobile Panel project components using the TIA Portal Simulator ( Online > Simulation > Start ) on an engineering workstation that lacks active runtime option licenses.
: Rarely, a core installation file or registry entry may become corrupted, preventing the license manager from functioning as intended.
: If it's missing, you need to purchase and transfer the license key (e.g., MLFB: 6AV2107-0GA00-0BB0 ) via a USB stick or download.
If your licenses are hosted on a central server rather than the local PC, open ALM, go to File > Settings > Connection , and verify that the remote license server's IP address is correctly listed and reachable via a network ping. : You are testing Comfort Panel or Mobile
Depending on your engineering environment and operational intent, you can fix this error by acquiring the license, repairing a corrupted file, or disabling the unneeded logging functionality.
This pop-up message commonly stems from three different technical scenarios:
This guide explores the reasons behind this error and provides step-by-step resolution strategies. If your licenses are hosted on a central
Open the on the Runtime PC.
Schedule periodic checks of your license status using ALM, especially before performing major Windows updates or system migrations. For critical applications, maintain backups of the license manager database ( almdb.sdf ) to expedite recovery in case of corruption.
Checking the license version in the ALM to ensure it matches your TIA Portal version. Open the on the Runtime PC
WinCC Runtime licenses are typically "Single" licenses, meaning they are bound to one specific hardware machine at a time. They cannot be actively shared across a network simultaneously.
(The exact version name, such as V16, V17, V18, or V19, must match your TIA Portal runtime version).