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How to resolve error – “Authentication has failed at emas”

Sometimes while we are about to attach the DSC to file the return be it GSTR-3B, GSTR-1 or TRANS-1, the error message “Authentication has failed at emas” is displayed. This error will be resolved by updating the DSC. So let’s understand the resolution for the same.

  1. Go to My Profilemy profile - gst portal
  2. Click on Register/ Update DSCregister - gst portal
  3. The Register Digital Signature Certificate page is displayed. In the PAN of Authorized Signatory drop-down list, select the PAN of the authorized Signatory that you want to update.
  4. Click the UPDATEregister digital signature - gst portal


    Before you update your DSC at the GST Portal, you need to install the em-Signer utility. The utility can be downloaded from the Register DSC page. DSC registration is PAN based and only Class 2 and Class 3 DSC are accepted at the GST Portal.

  5. Click the CONTINUE

    dsc re-registration - gst portal

  6. Select the certificate. Click the Sign button.

  7. A successful message that “DSC has been successfully updated” is displayed.

About Masters India - GST Suvidha Provider

Masters India, a leading GST Suvidha Provider (GSP) offering GST & EWay Bill Compliance Solution and APIs to make businesses in India GST Ready.

Comments 18

rajesh kumar

January 15, 2018

very helpful…thanks


February 20, 2018

it works


March 17, 2018

yes it works…. thanks

Pradeep Mangal

March 21, 2018

This is really helpful and worked. Customer Care of GSTN is hopeless, they give other solution which never work.

birender kumar

April 10, 2018

thanks alot


May 22, 2018

Thank u very much

pankaj k das

May 25, 2018

Thanks its very much helpfull

Manoj Raj

June 18, 2018

Thank you, very much


June 19, 2018

Very helpful. Thanks a lot!


July 12, 2018



July 21, 2018

thanks it works


August 6, 2018

Thanks a lot!

Nitesh Singh

August 17, 2018

Thanks a lot

Ashok Pancharya

August 20, 2018

Very Helpful. Works like a charm. Thanks a lot.


August 24, 2018



September 10, 2018

Thanks a lot. it really helped.

I thanks to people who really helps by posting the solutions for the errors.

Swarnalata Panigrahi

September 20, 2018

thank u so much. helped me a lot.


October 20, 2018

thank u so much