Scenario: While update, you may get CAB error from K7.
Manual Process
Steps to follow:
To do that, Open Run > MMC
5. Click on “File > Add/Remove Snap in”
6. Click on “Certificates > Add > select Computer Account > select Local computer > finish > OK”
8. Expand the Certificate > click on untrusted certificates > Certificates > at the right side you can see K7 Certificates installed here along with other AV certificates.
9. Kindly select all the certificate and delete it.
10. Now check for the K7 update.
Note: If the issue persists or you need any assistance, you may raise ticket at Submit a Ticket and Our Support Team will get in touch with you shortly to assist you.