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

This article is for programmers. If you're a customer who has received a blue screen error code while using your computer, see Troubleshoot blue screen errors.

QUOTA_UNDERFLOW Parameters

Parameter Description

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.