Computer must be connected to internet whicle validating digital signature.
Right click on the 'validity unknown' icon and click on
'Validate Signature'.
You will get the signature validation status window, click
on 'Signature Properties'.
Click on 'Show Certificate..'
Verify that there is a certification path named 'NIC sub-CA
for NIC 2011, National Informatics Center'. This identifies 'NIC sub-CA
for NIC 2011, National Informatics Center' as the owner of the digital
certificate that has been used when signing the document.
Mark the certification path named 'NIC sub-CA
for NIC 2011, National Informatics Center', click
the 'Trust' tab and then 'Add to Trusted Identities'.
Answer 'OK' to any security question that follows.
Check(✓) the field for 'Use this certificate as a
trusted root' and click 'OK' twice to close this and the next
window.
Click 'Validate Signature' to execute the validation.
Note: - Once 'NIC sub-CA
for NIC 2011, National Informatics Center' has been as a Trusted Identity,
any subsequent documents with digital signatures from CCA will be
validated automatically when opened.
One Time Password
If you have access to this mobile number, Please press 'Confirm' button .
Else press 'Cancel' button and Use EID to download e-Aadhaar letter