"unrecognized USB driver" warnings.

[johnhc]

On each boot of my host, I see five pairs of Warning message in the System Event Log as shown below.

Log Name:      System
Source:        hcmon
Date:          4/10/2012 1:38:01 PM
Event ID:      0
Task Category: None
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:      xxxx
Description:
Detected unrecognized USB driver (\Driver\pci).
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="hcmon" />
    <EventID Qualifiers="32768">0</EventID>
    <Level>3</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2012-04-10T18:38:01.391632900Z" />
    <EventRecordID>53608</EventRecordID>
    <Channel>System</Channel>
    <Computer>xxxx</Computer>
    <Security />
  </System>
  <EventData>
    <Data>\Device\hcmon</Data>
    <Data>\Driver\pci</Data>
    <Binary>00000000020028000000000000000080000000000000000000000000000000000000000000000000</Binary>
  </EventData>
</Event>

...and...

Log Name:      System
Source:        hcmon
Date:          4/10/2012 1:38:01 PM
Event ID:      0
Task Category: None
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:      xxxx
Description:
Detected unrecognized USB driver (\Driver\EtronXHCI).
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="hcmon" />
    <EventID Qualifiers="32768">0</EventID>
    <Level>3</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2012-04-10T18:38:01.391632900Z" />
    <EventRecordID>53607</EventRecordID>
    <Channel>System</Channel>
    <Computer>xxxx</Computer>
    <Security />
  </System>
  <EventData>
    <Data>\Device\hcmon</Data>
    <Data>\Driver\EtronXHCI</Data>
    <Binary>00000000020028000000000000000080000000000000000000000000000000000000000000000000</Binary>
  </EventData>
</Event>

These warnings appear to be caused by hcmon.sys which is used by VMware Player to detect USB ports becoming active. As a test I removed the file from System32\drivers folder and got no warnings on reboot.  I do get a couple of Errors about missing file hcmon.sys.  Doing a search, I could find no other reference to hcmon.sys.  There is no .inf and no .cat files associated with this driver.  I do not know why Windows is complaining about hcmon, but am hopefully someone can suggest a way to stop the warning messages.  Thanks and enjoy, John.

[MeinName]

Hi, I have the same problem.

I have a ASUS Maximus Gene V mainboard.

Getting the 9 warnings below every time I boot my Host System (Win7 x64 Prof).

Detected unrecognized USB driver (\Driver\iusb3xhc).

Detected unrecognized USB driver (\Driver\ACPI).
Detected unrecognized USB driver (\Driver\pci).
Detected unrecognized USB driver (\Driver\asmtxhci).
Detected unrecognized USB driver (\Driver\ACPI).
Detected unrecognized USB driver (\Driver\pci).
Detected unrecognized USB driver (\Driver\iusb3xhc).
Detected unrecognized USB driver (\Driver\ACPI).
Detected unrecognized USB driver (\Driver\pci).

Looks like there is another user who has the Problem...
http://communities.vmware.com/message/2062422#2062422

[continuum]

sounds like you use USB 3 which is not supported on Windows hosts