Microsoft Windows Error Code 0xC0000384: How to Fix It

Easy 10-20 minutes Medium Severity Verified June 2026
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Error Code
0xC0000384
Brand
Microsoft Windows
Product Type
operating_system
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
10-20 minutes
Error code 0xC0000384 indicates that Windows attempted to access a smartcard but no smartcard was detected. This often occurs when logging in with a smartcard requirement or when using smartcard-dependent applications. The fix involves ensuring the smartcard is properly inserted, drivers are up to date, or adjusting group policy settings.
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Tools You'll Need

How to Fix Error Code 0xC0000384

  1. Insert Smartcard Properly

  2. Check Smartcard Reader Connection

  3. Update Smartcard Driver

    Back up data before driver updates.

  4. Restart Smartcard Service

  5. Change Group Policy (Windows Pro/Enterprise)

    Only for Windows Pro/Enterprise; not available on Home.

  6. Test with Another Smartcard

Parts You May Need

Smartcard reader (if external)
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Smartcard
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Smartcard reader (if external)
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Smartcard
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Smartcard reader (if external)
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Smartcard
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Smartcard reader (if external)
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Smartcard
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When to Call a Professional

If the error persists after trying all steps, the smartcard reader may be malfunctioning and requires hardware replacement by a technician.

Frequently Asked Questions

What does error 0xC0000384 mean?
It means Windows cannot find a smartcard, often due to improper insertion, driver issues, or reader problems.
Can I bypass the smartcard requirement?
Yes, if you're not using smartcard-based logon, disable smartcard requirement in Group Policy or change your PIN to avoid smartcard prompts.
How do I update smartcard drivers?
Go to Device Manager > Smart card readers, right-click your reader, select Update driver, and choose automatic search.
Why does the error appear even with the card inserted?
Possible causes: faulty card, loose connection, outdated driver, or disabled smartcard service.
Do I need a smartcard reader?
Yes, if your application requires one. For built-in readers, ensure it's enabled in BIOS.

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