You are unable to install ESET products on a recently purchased a Toshiba or eMachines-brand computer and are receiving an installation error message such as one of the following:

Error: 1 (error 1) OR

Error 2878 OR

Installation ErrorPlease try again, or download and install offline installer.

Your issue is most likely a conflict with software that was pre-installed on the machine for you by the manufacturer. This software is not always removed by uninstalling the previous antivirus, and will need to be uninstalled completely before you can install your ESET product.

Figure 1-1
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There are two possible solutions for removing the pre-installed software causing this error. Please follow solution 1 first and only continue to solution 2 if the issue is not resolved:

Solution 1: Uninstall Norton Internet Security and Toshiba Laptop Checkup by Symantec from the Start menu

    1. Click Start→  All Programs→  Norton Internet Security→  Uninstall.
    2. Follow the on-screen instructions to uninstall Norton Internet Security.
    3. Click Start→  Control Panel
  1. Click Programs and Features, then select Toshiba Laptop Checkup by Symantec from the list of programs and click Uninstall.

    eMachines users

    eMachines users will need to select Norton PC Checkup from the list of programs and click Uninstall.

  2.  Restart your computer and install your ESET product. If you still receive error 2878, continue to solution 2.
Discover More help  All about ESET

Solution 2: Norton PC Checkup Uninstall String

  1. Click Start. Copy/paste the following string into the Search field and press Enter:

    C:Program Files (x86)NortonInstaller{170fa89a-6886-4c9e-b17b-12bccdd80788}NortonPCCheckupLicenseType2.0.13.11InstStub.exe /X

  2. Follow the on-screen instructions to uninstall Toshiba Laptop Checkup.

    eMachines users

    eMachines users will see Norton PC Checkup, rather than Toshiba Laptop Checkup at this screen.

Figure 1-2

Source : Official ESET Brand
Editor by : BEST Antivirus KBS Team

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