Open the folder and double-click the file named EProcClient_X_X_X.exe (where X denotes the version number).

If using an e-Pass 2003 token , ensure you select "Microsoft CSP" instead of "Private Key CSP" during the driver installation.

Look for the link labeled or directly for the file named "ISRO_EProcClient.zip" . Save the file to a known location on your local drive. System Prerequisites

Windows XP (SP3) or higher (Windows 7, 8, and 10 are supported).

A valid Class 3 DSC (both Signing and Encryption) issued by a licensed Certifying Authority in India.

This usually occurs on Windows 7/8. To fix it, go to Control Panel > User Accounts > Change User Account Control Settings and set it to "Never Notify" , then restart your PC.

ISRO E-Procurement Client: Download and Installation Guide To participate in the high-tech bidding process of the , vendors must use the official ISRO e-Procurement Portal . A critical component for this process is the ISRO_EProcClient.zip file, which contains the necessary signer service for digital signature certificates (DSC).

Ensure the ISRO portal is added to your "Trusted Sites" in Internet Explorer and that ActiveX security levels are set to "Low" .

Before running the client, ensure your machine meets these specific requirements: