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Bug Check 0x21: QUOTA_UNDERFLOW

The QUOTA_UNDERFLOW bug check has a value of 0x00000021. This indicates that quota charges have been mishandled by returning more quota to a particular block than was previously charged.

Important Info If You Have Received a STOP Code

bsod

If you received a blue screen error, or stop code, the computer has shut down abruptly to protect itself from data loss.

For information about how to recover from this error, see Resolving Blue Screen errors in Windows.

QUOTA_UNDERFLOW Parameters

The following parameters are displayed on the blue screen.

ParameterDescription

1

The process that was initially charged, if available.

2

The quota type. For the list of all possible quota type values, see the header file Ps.h in the Windows Driver Kit (WDK).

3

The initial charged amount of quota to return.

4

The remaining amount of quota that was not returned.

 

 

 

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