Error: "3040,40018" appears on my Norton product

The error happens if you already have a non-Symantec security product on your computer. Symantec recommends that you run only one antivirus or antispyware product. Running only a Norton product provides the best protection and minimizes conflicts between security programs. We suggest that you uninstall any non-Symantec security product from your computer. For instructions to remove a non-Symantec security program from your computer, read the program documentation or contact the program manufacturer.

If you do not have a non-Symantec security product or if the problem persists even after uninstalling the non-Symantec security product, go to Step 1.

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.

STEP 1

Update your Virus Definitions

  1. Go to the Intelligent Updater downloads page.

  2. Depending on your version of Windows, do one of the following:

    • For Windows (32-bit): Click the first file in the list under Filename. The file name starts with the year and ends with v5i32.exe. e.g. 20070828-017-v5i32.exe

    • For Windows (64-bit): Go to the 64-bit Platforms section, and click the first file in the list under Filename. The file name starts with the year and ends with v5i64.exe. e.g. 20090922-017-v5i64.exe

  3. Save the file to the Windows desktop.

  4. On the desktop, double-click the file that you saved.

STEP 2

Enable Auto-Protect at startup

  1. Start your Norton product.

  2. Click Settings.

  3. Under Detailed Settings, click Antivirus.

  4. On the Automatic Protection tab, under Real Time Protection, if Auto-Protect shows Off, click the slider to turn it On.

  5. Click Apply, and then click Close.

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

STEP 3

Start the computer in safe mode

  1. Exit all the programs.

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

  3. Type in the following text, and then press Enter.

    msconfig

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

  4. In the System Configuration window, on the Boot tab, check Safe boot.

    On Windows XP: In the System Configuration Utility window, on the BOOT.INI tab, check /SAFEBOOT.

  5. Click OK.

  6. When you are asked to restart the computer, click Restart.

    The computer restarts in the Safe mode which takes several minutes.

STEP 4

Run Full System Scan

  1. Start your Norton product.

  2. In the main window, click Security, and then click Run Scans.

  3. In the Scans window, select Full System Scan and click Go.

  4. When the scan is finished, click Finish.

STEP 5

Start the computer in normal mode

  1. Exit all the programs.

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

  3. Type in the following text, and then press Enter.

    msconfig

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

  4. In the System Configuration window, on the Boot tab, uncheck Safe boot.

    On Windows XP: In the System Configuration Utility window, on the BOOT.INI tab, uncheck /SAFEBOOT.

  5. Click OK.

  6. When you are asked to restart the computer, click Restart.

    The computer restarts in the normal mode which takes several minutes.

STEP 6

Run Full System Scan again

  1. Start your Norton product.

  2. In the main window, click Security, and then click Run Scans.

  3. In the Scans window, select Full System Scan and click Go.

  4. When the scan is finished, click Finish.

If the problem persists, we recommend that you download and run Norton Power Eraser.

Thank you!

Thank you for using Norton Support.

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DOCID: v69674935_EndUserProfile_en_us
Operating System: Windows
Last modified: 09/04/2015