Event ID 1044/1047 may appear after reinstall network adapter

Author: Yuval Sinay MVP

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SUMMARY

The following Knowledgebase will help you to resolve Event ID 1044/1047 errors that may appear after reinstall network adapter

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After reinstall network adapter the following errors may appear on Windows 2003 Server with Virtual Server 2005 R2:

Virtual Server could not open its emulated Ethernet switch driver. Access to the external network and host will be unavailable to all guests using the "HP NC7761 Gigabit Server Adapter" adapter. Guests using Virtual Switch will still be able to access other guests using Virtual Switch.
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
User: NT AUTHORITY\NETWORK SERVICE
Event ID: 1047
Source: Virtual Server
Category: Virtual Server:
Type: Error

or/and:

Virtual Server could not open its emulated Ethernet switch driver. To fix this problem, re-enable the Virtual Server Emulated Ethernet Switch service on one or more Ethernet adapters or reinstall Virtual Server.
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp

User: NT AUTHORITY\NETWORK SERVICE
Event ID: 1044
Source: Virtual Server
Category: Virtual Server:
Type: Error

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CAUSE

Reinstall the network adapter may un-bind the "Virtual Machine Network Service".

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RESOLUTION

To resolve the following try to use the following options:

Option 1:

a. Verity that "Virtual Machine Network Service" bind to the reinstall "Network Adapter".

b. Reboot the server.

Option 2:

a. Reinstall "Virtual Machine Network Service" service by installing *.inf files from:

       C:\Program Files\Microsoft Virtual Server\Drivers\VMNetSv\x86

       For Virtual Server 2005 R2 - 32 Bit Edition

       C:\Program Files\Microsoft Virtual Server\Drivers\VMNetSv\x64

       For Virtual Server 2005 R2 - 64 Bit Edition

b. Reboot the server.

Option 3:

a. Backup all your *.VMC and *.VHD files.

b. Stop the "Virtual Helper" and "Virtual Server" services.

c. Remove Virtual Server from "Add/Remove Program" under the "Control Panel".

d. Reboot the server.

e. Delete the directories and there contents:

   "C:\Document and Settings\All Users\Application Data\Microsoft\Virtual Machine Helper"

   "C:\Document and Settings\All Users\Application Data\Microsoft\Virtual Server"

   "C:\Document and Settings\All Users\Application Data\Microsoft\Virtual Server Webapp"

   "C:\Document and Settings\All Users\Shared Virtual Machines"

"C:\Document and Settings\All Users\Shared Virtual Networks"

   "C:\Document and Settings\<your user name>\Application Data\Microsoft\Virtual Server"

f. Reinstall Virtual Server 2005

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MORE INFORMATION

Microsoft Virtual Server 2005 R2

http://www.microsoft.com/windowsserversystem/virtualserver/default.mspx

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APPLIES TO

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kbpubtypecca kbpubmvp kbhowto KB555629

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