Microsoft KB Archive/931849

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Knowledge Base


Error message when you run Windows Defender: "Error Code 0x800106ba"

Article ID: 931849

Article Last Modified on 2/22/2007



APPLIES TO

  • Windows Defender



SYMPTOMS

When you run Microsoft Windows Defender, you receive one of the following error messages:

Error Code 0x800106ba Application failed to initialize

Error Code 0x800106ba The systems license has expired. Your logon request is denied.

CAUSE

This problem may occur when Windows Defender is updated.

RESOLUTION

To resolve this problem, follow these steps:

  1. Uninstall Windows Defender, and then reinstall Windows Defender. To do this, follow these steps:
    1. Click Start, click Run, type appwiz.cpl, and then click OK.
    2. Click Windows Defender, and then click Remove.
    3. Follow the prompts to uninstall Windows Defender.
    4. To reinstall Windows Defender, visit the following Microsoft Web site:
  2. If this issue is not resolved after you complete step 1, uninstall Windows Defender, use the Windows Installer CleanUp utility, and then reinstall Windows Defender. To do this, follow these steps:
    1. Click Start, click Run, type appwiz.cpl, and then click OK.
    2. Click Windows Defender, and then click Remove.
    3. Follow the prompts to uninstall Windows Defender.
    4. To use the Windows Installer CleanUp utility, click the following article number to view the article in the Microsoft Knowledge Base:

      290301 Description of the Windows Installer CleanUp utility

    5. To reinstall Windows Defender, visit the following Microsoft Web site:
  3. If this issue is not resolved after you complete step 2, follow this step:
    1. Click Start, click Run, type regsvr32 file name, and then click OK.

      Note In this step, file name is a placeholder for the following files.

      Repeat this procedure for the following files:
      • wuapi.dll
      • wuaueng.dll
      • wucltui.dll
      • wups.dll
      • wuweb.dll
      • atl.dll
      • softpub.dll
      • wintrust.dll
      • initpki.dll
      • mssip32.dll



Additional query words: errmsg

Keywords: kbtshoot kbexpertisebeginner kberrmsg kbprb KB931849