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Lumia 635 Windows Phone Error 0xc000021a Blue Screen RRS feed

  • Question

  • I can't get my Lumia 635 phone running Windows 8.1 to boot. It constantly cycles through restart to blue screen with error 0xc000021a.  Soft and Hard reset does not help. Windows Device Recovery Tool can't recognize device. Is there any way to fix this?
    Friday, November 4, 2016 12:25 AM

All replies

  • Hi MerCMi.

    Try updating Windows Device Recovery Tool to the latest version (if available) and repeat the process; consider doing this test on a different PC too.
    If this doesn't work, send your smartphone to a support center to be restored.

    Bye.


    Luigi Bruno
    MCP, MCTS, MOS, MTA

    Sunday, November 6, 2016 7:42 PM