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Error: (8921,251) "Unable to connect to the Norton LiveUpdate server. Please check your Internet connection"

These steps are for the current version of the Norton products. If you have an older version or if you do not know your product version, go to Norton Update Center.


Check the Internet connectivity

  1. Start your web browser.

  2. Try to connect to the following website:


  3. Depending on your situation, do one of the following:

    • If you can connect to the website, go to Step 2.

    • If you cannot connect to the website, go to Step 3.


Run LiveUpdate

  1. Start your Norton product.

  2. In the main window, click Security, and then click LiveUpdate.

  3. When Norton LiveUpdate is finished, click OK.

  4. Run LiveUpdate until you see the message, "Your Norton product has the latest protection updates."

  5. Exit all the programs, and restart the computer.


Configure Norton ConnectSafe

  1. Press the Windows + R keys to open the Run dialog box.

  2. In the Run dialog box, type the following and then click OK:


  3. Right-click the network adapter that is currently active, and then click Properties.

    If the User Account Control prompt appears, click Yes or Continue.

  4. In the Network Connection Properties window, under "This connection uses the following items", click Internet Protocol (TCP/IP) or Internet Protocol Version 4 (TCP/IPv4).

  5. Click Properties.

  6. To specify DNS server address settings, click Use the following DNS server addresses.

  7. In the Preferred DNS server and Alternate DNS server boxes, type the two Norton ConnectSafe IP addresses.

    Preferred DNS:

    Alternate DNS:

  8. In the Internet Protocol (TCP/IP) Properties window, click OK.

  9. Click OK.

  10. Run LiveUpdate in your Norton product.

What if this didn't work?

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DOCID: v59829411_EndUserProfile_en_us
Operating System: Windows
Last modified: 09/14/2017