Error 203 typically occurs when the installer identifies your scanner but cannot complete the download. This is usually due to a connection interruption or a firewall blocking the process. 🌐
✅ The Solution: Manual Installation
If the All-in-One installer fails, please download and install the components individually using the links below.
🖥️ 1. Scanner Driver (ZIP File)
Required for your computer to communicate with the scanner.
🟦 For IRIScan Executive 4
📥 Download Executive 4 Driver
🟩 For IRIScan Express 4
📥 Download Express 4 Driver
💡 After downloading, right-click the folder to "Extract All" and run the setup.exe found inside.
⚙️ 2. Button Manager V2 (ZIP File)
This essential tool allows you to configure the scanning button on your device.
💡 Extract the ZIP folder contents first, then launch the setup.exe to start the installation.
📑 3. Readiris PDF 23 (MSI File)
Our powerful OCR software to convert scans into editable Word or Excel files.
- 📥 Download Readiris PDF 23
- ⭐ Note: This is a direct .msi installer (no extraction needed). It activates automatically when your scanner is connected via USB.
🚀 Best Practices for Installation
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Unplug your scanner from the USB port. 🔌
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Extract & Run: For ZIP files, you must extract the folder before running setup.exe. 📦
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Run as Administrator: Right-click the installer files and select "Run as Administrator". 🛡️
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Restart your computer once all installations are finished. 🔄
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Connect your scanner and launch Readiris PDF.




Alain Ledent
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