Income Tax Portal DSC Validation Failed: Fix

On the Income Tax e-filing portal, your DSC must be registered against your PAN before you can sign audit reports, company returns and other forms. Most errors come from a PAN mismatch, an old registration or the signer utility.

Common causes

The PAN on the DSC does not match the PAN of the user logged in.
An old or expired DSC is still registered.
The signer utility is not running.
The wrong certificate (for example an encryption certificate) was selected.

How to fix it

Check the certificate validity and the name and PAN in your token utility.
On the portal open Profile Settings → My Profile → Register DSC.
Delete any old or expired DSC registration.
Start the signer utility as administrator, select the active Class 3 signing certificate and register it.
Log out, clear the browser cache and log back in before signing.

Registering a DSC for the first time

The PAN you log in with must match the PAN in the DSC. For a company, the DSC belongs to the authorised signatory, and the signatory is added to the account under the correct role.

Still stuck? We will fix it with you

Send us a screenshot of the error on WhatsApp. Bizgroww, Kolkata — pan-India DSC support.

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Frequently Asked Questions

Why does the portal say invalid signature?

The certificate selected does not match the logged-in PAN, or it is not a signing certificate.

Income Tax Portal: "DSC Validation Failed" and Registration Errors

Common causes

How to fix it

Registering a DSC for the first time

Still stuck? We will fix it with you

Frequently Asked Questions

Why does the portal say invalid signature?

Do I register again after renewal?

Our DSC Services

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