[KB2850] Troubleshooting for "Modules update failed" message


  • You receive the error message "error 0073"
  • You receive the error message "Modules update failed"


Mac Users | Android Users

Check to see if you can update after each step

Click Update Check for updates. If the update fails, proceed to the next step until you are able to update.

  1. Make sure you are using the latest version of your ESET product.

  2. Confirm the hard drive partition (for example, C:\) where your ESET product is installed, has enough free disk space (minimum of 1 GB).

  3. Re-enter your ESET-issued License Key.

  4. Verify that your license has not expired.

  5. Clear the update cache.

  6. Remove any previously installed antivirus software.

  7. Exclude ESET from detection on your third-party firewall (such as Norton Personal Firewall, ZoneAlarm, or others). If you are using the ESET firewall and have no other firewall software installed, disregard this step.

  8. If you do not use HTTP proxy for downloading updates:

    1. Open the main program window of your Windows ESET product.

    2. Press the F5 key to open Advanced setup.

    3. Click Update, expand Profiles → Updates → Connection Options, select Do not use proxy server from the Proxy mode drop-down menu, and then click OK.

    4. Business users only: If your settings in HTTP Proxy are locked (read-only) then this proxy policy was forced by ESET PROTECT, ESET Security Management Center, or ESET Remote Administrator.

  1. Test communications with the ESET update server:

    1. Press the Windows key + R on your keyboard, type cmd into the text field and press Enter.

    2. Type ping update.eset.com into the command prompt and press Enter (see Figure 1-1 below).

    3. If you can connect to the update server, you will see a Reply from message followed by the IP address of the server you are trying to reach.

Figure 1-1
  1. Uninstall and reinstall your ESET product.

  2. Clean the infected computer.

Contact ESET Technical Support.