| | Fix in 9.0.3.8 | |----------------------------|----------------------| | “Device not found” errors after Windows Update | Redesigned USB VID/PID detection | | Failure to capture on 500+ DPI scanners | Adjusted sensor read resolution | | Memory leaks after 1000+ scans | Garbage collection improvements | | Incompatibility with .NET 6/8 applications | New native interop layer |
: Press Win + R , type services.msc , and press Enter. Locate Mantra MFS100 Client Service . Right-click it and choose Restart . Set its Startup Type to Automatic . 2. Error 1140: Device Not Registered
The software is working, but the scanner's serial number is missing from the management server.
The Mantra MFS100 is one of the most widely used optical fingerprint sensors for biometric authentication. It powers critical identity verification systems across government portals, banking institutions, and commercial applications. Mfs100clientservice Version 9.0.3.8
Technically yes, but not recommended. Rolling back may cause authentication failures due to incompatible encryption standards on the server side. If absolutely necessary, uninstall 9.0.3.8 completely, reboot, and install the older version.
Wait for the Windows notification: "Device is ready to use" .
: Accelerates public-to-registered device domain switching. | | Fix in 9
Click once the setup wizard confirms successful installation. Step 3: Configure Communication Flags (For Google Chrome)
We recommend updating to Version 9.0.3.8 if you are currently:
Use these quick diagnostic workflows if your system fails to detect the biometric scanner. Error: "Techtatva Localhost Not Found" Set its Startup Type to Automatic
1. Error: "Client Service Not Found" or "Mantra RD Service Stopped"
New in v9.0.3.8: getHealth method returns sensor uptime, temperature (if supported), and total captures.