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print this documentDocument ID:2007092614453948
Last Modified:10/26/2009

Symantec AntiVirus error: "LU1834 - LiveUpdate could not find an update file on the server. Please run LiveUpdate again."

Situation:Why are the virus definitions old and only occasionally update successfully?

Solution:To solve this issue, follow the below steps:

When connecting to the internet:
  1. Run LiveUpdate again. If the problem persists, check with the ISP.
  2. If this error occurs frequently, make sure the system is set to download virus definitions only to the primary server, to download daily, and to retry frequently (hourly).
    1. Adjust these settings by right-clicking on the Server group in the Symantec System Center
    2. Select All Tasks> Symantec AntiVirus> Virus Definition Manager> "Update only the primary server of this server group"
    3. Then select Configure...> "Schedule for automatic updates"> Schedule... , and adjust settings as necessary.
    4. Select Update Now in the "Configure Primary Server Updates" window.
        Note: This should do the same thing as clicking the LiveUpdate button from within the Symantec AntiVirus program:
          Click Start> Run and type vpc32 on the primary server.

When connecting to an internal LiveUpdate server:

Make sure that IIS is configured to host all the different file extensions that LiveUpdate uses, including .M25 files. For more information see the article below:

Title: 'Tips for Using Microsoft's Internet Information Services (IIS) 6.0 to host content for your Central LiveUpdate Server using HTTP'
Document ID: 2005051911001948
Web URL:

Technical Information:This error could be due to a problem with the internet connection provided by the ISP. If you are using an internal LiveUpdate server, the error could be due to IIS denying access to the file.

References:See also: "Error: 'LU1830: LiveUpdate cannot connect to a LiveUpdate server when using the LAN host.'" at URL:

print this documentDocument ID:2007092614453948
Last Modified:10/26/2009

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Product(s): Symantec AntiVirus 10.1
Operating Systems(s): Windows Server 2003 32-bit Edition
Date Created: 09/26/2007

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