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Known ESET NOD32 update errors (2.7)

2007-12-8 Nod32 technical documentation 3Commentary 0Trackback

Listed below are the most frequently encountered errors when updating the ESET NOD32 virus signature database. These errors are usually due to incorrectly configured update settings or third party programs such as an antivirus system or firewall. Following each error is a detailed solution description.

Error: "Connecting to server" - The address of the update server is known, but ESET NOD32 cannot connect.

Error "Cannot connect to the server" - Connection to an update server cannot be established, reason not given. For information on the resolution of this error, click here:

Possible reasons:

The TMP and TEMP system variables are not defined in the system, or the directories to which they point do not actually exist on disk. Please make sure the aforementioned variables in System properties - Advanced – Environment variables actually point to existing directories.

The file Program files/ESET/nod32.000 is corrupted for some reason (e.g., due to a disk error).

  1. Check the disk for errors using scandisk (Win 9x/ME) or chkdsk (Win NT/2000/XP/2003)

  2. Rename the file nod32.000 (you might need to restart Windows in Safe mode first)

  3. Reboot the machine (you may receive an error regarding loading resident protection, just ignore it)

  4. Update ESET NOD32

  5. Reboot the machine


The file /Program files/ESE/nod32.000 is locked by another application

  1. Reboot your computer and try to update ESET NOD32 again


If your update method is to connect (through the internet) directly to ESET’s servers, please check the following:

  1. Make sure an Internet connection is already established before you perform the update.

  2. Make sure a correct server is selected from the drop-down menu in the Update setup (if you update ESET NOD32 from the Internet, it should be set to Choose automatically). If you update ESET NOD32 from a local network and encounter this error, please contact your network administrator for the exact path to the mirror

  3. If you are using a firewall, make sure the NOD32krn service has access to the Internet enabled.

  4. If you are using a proxy server, be sure the connection parameters are set properly in the Advanced Update setup - LAN setup (if the proxy server requires authentication, make sure a correct login name and password are specified).

  5. If you are not using a proxy server, make sure the use of a proxy server is disabled (NOD32 Control Center → Update → Setup → Advanced → Setup - Proxy Server section).

  6. Restart your computer.

  7. Should the problem persist, please contact ESET Customer Care.


If your update method is to connect to your local update server, please check the following:

  1. Make sure that the update server can be accessed from your computer.

  2. Make sure a valid server name is entered in the Location section.

  3. Restart your computer.

  4. Should the problem persist, please contact ESET Customer Care.


Error "Replacing current file"

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