Error "Digital Signature of installation files is missing”

Latest update: January 25, 2024 ID: 11004
 
 
 
 
Show applications and versions that this article concerns
  • Kaspersky applications for home
  • Kaspersky Endpoint Security 12.4 for Windows (version 12.4.0.467)
  • Kaspersky Endpoint Security 12.3 for Windows (version 12.3.0.493)
  • Kaspersky Endpoint Security 12.2 for Windows (version 12.2.0.462)
  • Kaspersky Endpoint Security 12.1 for Windows (version 12.1.0.506)
  • Kaspersky Endpoint Security 12 for Windows (version 12.0.0.465)
  • Kaspersky Endpoint Security 11.11 for Windows (version 11.11.0.452)
  • Kaspersky Endpoint Security 11.10 for Windows (version 11.10.0.399)
  • Kaspersky Endpoint Security 11.9 for Windows (version 11.9.0.351)
  • Kaspersky Endpoint Security 11.8 for Windows (version 11.8.0.384)
  • Kaspersky Endpoint Security 11.7 for Windows (version 11.7.0.669)
  • Kaspersky Endpoint Security 11.6 for Windows (version 11.6.0.394)
 
 
 
 

Issue

When installing a Kaspersky application, you may receive the error message:

  • “Digital Signature of installation files is missing”.
  • “Error 1330. A file that is required cannot be installed because the cabinet file C:\ProgramData\Kaspersky Lab\KES.21.13\Setup\kes.cab has an invalid digital signature. This may indicate that the cabinet file is corrupt. Error 266 was returned by WinVerifyTrust.”

Solution

Follow the steps below to solve the issue.

 
 
 
 

Step 1. Check the system date on your computer

 
 
 
 

Step 2. Check for the latest Windows updates

 
 
 
 

Step 3. Check the digital signature of the installer

 
 
 
 

Step 4. Check if required root certificates are installed (for Windows users)

 
 
 
 

Step 5. Update Windows root certificates

 
 
 
 

Step 6. Remove malware from your computer

 
 
 
 

Step 7. Check if there are any Kaspersky certificates in the Untrusted Certificates folder

 
 
 
 

What to do if the issue persists

 
 
 
 
 
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