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

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.

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

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

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