Fix Your PC Error C000021a

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You may receive error message C000021a when system shut down, corrupt boot file, blue screencomputer crash, windows 7 installation…, this page contains some useful information to repair your computer error code c000021a, if you fixed this error from this help article, you can email us ( ) give your feedback, and we hope you can share this page to your friends if they need like you, thanks.

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Start computer – C000021a fatal system error Back to Top
  • After you install Roxio GoBack (included with Norton System Works), and attempt to start your computer, you may get a error below:”C000021a (fatal system error).
    The session manager initialization system process terminated unexpectedly with a status of 0xc000003a (0x00000000, 0x00000000)

  • How fix?Disable GoBack, and then uninstall GoBack.

    Note: You cannot uninstall GoBack in Safe mode.

    1. Restart your computer.

    2. During the startup process, press SPACE to access GoBack’s menu options.

    3. When prompted, enter the option for Disable GoBack, and then allow the computer to complete the startup process.

    4. Click Start, and then click Control Panel.

    5. In Control Panel, double-click Add or Remove Programs.

    6. In the list of installed programs, click GoBack, and then click Remove.

    7. Follow the on-screen instructions to complete the uninstall process.

Microsoft help links for error c000021a Back to Top
Fix PC tool for code c000021a Back to Top
  • If you still haven’t fixed the windows xp C000021a problem:1. Please try the tool windows registry optimizer, it safely cleans PC errors & invalid entries cause slow speed, blue screen, deadlock errors and crashing, and repair registry problems to speedup your computer performances. It is easy to use. And you can scan your PC for free first!

    2. Some pc error is related to driver problems, Driver Update software is designed to quickly locate the most current drivers specific to your computer system, you can run a free scan for your pc driver update first.


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