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
If you received a blue screen error, or stop code, the computer has shut down abruptly to protect itself from data loss. A hardware device, its driver, or related software might have caused this error. If your copy of Windows came with your computer, call the manufacturer of your computer. If you purchased Windows separately from your computer, Microsoft provides support. To find contact info for Microsoft or your computer manufacturer, Contact Support.
If you have experience with computers and want to try to recover from this error, follow the steps provided in the Microsoft article Resolving STOP (Blue Screen) Errors in Windows.
These actions might prevent an error like this from happening again:
- Download and install updates and device drivers for your computer from Windows Update.
- Scan your computer for computer viruses.
- Check your hard disk for errors.
QUOTA_UNDERFLOW Parameters
The following parameters are displayed on the blue screen.
| 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. |
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Build date: 4/9/2013
