Article ID: 192786
Article Last Modified on 11/1/2006
APPLIES TO
- Microsoft Windows NT Server 4.0, Terminal Server Edition
- Microsoft Windows NT Server 4.0 Standard Edition
This article was previously published under Q192786
SYMPTOMS
The following message appears as an warning:
Event ID : 11
Source : Serial
Description: The hardware resources for COM1 are already in use by
another device.
However, the device on COM1 continues to function normally.
CAUSE
When modems are enumerated by Pnpisa.sys, entries are created in the
registry. When installing a third-party driver that is the equivalent of
Serial.sys, these entries confuse Serial.sys. During startup, Serial.sys
attempts to manage this device and claim those resources already used by
the third-party driver. This process fails and reports this as an error
when, in fact, it is informational as the device on COM1 is still
functioning.
RESOLUTION
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the
Microsoft Knowledge Base:
152734 How to Obtain the Latest Windows NT 4.0 Service Pack
STATUS
Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.
Keywords: kbhotfixserver kbqfe kbbug kbfix KB192786