Certificate validation fails when installing my ESET product


  • Received an ECP.20031 error during ESET installation.


This error is caused as a result of outdated or insufficient security certificates. Follow the steps below to resolve it:

Windows XP users

The steps in this article are for later versions of windows, to resolve this issue in Windows XP, follow these steps:

  1. Click Start → My Computer → Add or remove programs → Add/Remove Windows Components
  2. Select the checkbox next to Update Root Certificates.
  3. In the Windows Components Wizard window, click Next and then click Finish.
  1. Click here to download a new trusted root certificate authority.
  1. Right-click the trusted root certificate authority and select Save as. Save the file to your desktop as a .crt file. To do so, change the file extension in the File name field to .crt and then click Save.

Figure 1-1

  1. To launch the Certificate Import Wizard, double-click the .crt file from step 2.
  1. Click Install Certificate.

Figure 1-2

  1. Click Next.

Figure 1-3

  1. Click Next.

Figure 1-4

  1. Click Finish.

Figure 1-5

  1. Click OK.

Figure 1-6

  1. Download Microsoft Root Certificate updater.
  2. Run the .exe file you downloaded in step 9 to install Microsoft Root Certificate updater. Your ESET product should install correctly after you complete these steps.

Check whether the system date and time is correctly set. If not, adjust your system date and time.

If you cannot resolve the issue:

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