GST Signature Cancelled / Failed Error: How to Fix GST Portal DSC Signing Problem (2026 Guide)
GST Signature Cancelled / Failed Error: How to Fix GST Portal DSC Signing Problem (2026 Guide)
Common Fixes for GST DSC "Signature Cancelled/Failed" Error
Restart emSigner as Administrator: Close the emSigner application completely from the system tray (bottom-right corner of Windows), right-click the emSigner desktop icon, and select Run as Administrator.
Check USB Token Drivers: Ensure the correct and latest USB token driver ( Download Latest Drivers ) is installed on your computer. Reinsert the DSC USB token into a different USB port.
Verify DSC Registration: Make sure your Digital Signature Certificate is properly registered and updated on the GST Portal under your profile (My Profile > Register/Update DSC).
Verify PAN Match: Check that the PAN on your DSC matches the PAN associated with the GSTIN you are trying to sign for.
Allow Localhost / SSL Exception: Ensure emSigner is running on the local server port (typically https://127.0.0.1:1585), and open https://127.0.0.1:1585 in your browser to accept the security certificate/proceed to the unsafe local page if prompted.
Clear Browser Cache or Switch Browser: Clear your browser cache, or try signing using an alternative browser (such as Google Chrome or Mozilla Firefox) with updated Java and pop-up blockers disabled.
If the issue still not get solved, please contact GST Website helpline.
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