PROBLEMA HACIENDO BACKUP

tengo un server con windows 2003 server r2.
Cuando intento hacer backup con NTBACKUP me genera el siguiente error con
el
backup shadow copy..

Estos son los errores que se generan el EVENT VIEWER cunado corro la
aplicación NTBACKUP y este comienza a cargar el volumen shadow copy
GRACIAS POR LA AYUDA PRESTADA...

ERROR 1

Event Type: Error
Event Source: NTBackup
Event Category: None
Event ID: 8019
Date: 7/15/2006
Time: 11:43:55 AM
User: N/A
Computer: IMMSSVR01
Description:
End Operation: Warnings or errors were encountered.
Consult the backup report for more details.

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.

ERROR 2

Event Type: Error
Event Source: VSS
Event Category: None
Event ID: 8193
Date: 7/15/2006
Time: 11:38:55 AM
User: N/A
Computer: IMMSSVR01
Description:
Volume Shadow Copy Service error: Unexpected error calling routine
CoCreateInstance. hr = 0x80040154.

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 2d 20 43 6f 64 65 3a 20 - Code:
0008: 42 55 45 43 58 4d 4c 43 BUECXMLC
0010: 30 30 30 30 33 32 38 37 00003287
0018: 2d 20 43 61 6c 6c 3a 20 - Call:
0020: 42 55 45 43 58 4d 4c 43 BUECXMLC
0028: 30 30 30 30 37 30 39 36 00007096
0030: 2d 20 50 49 44 3a 20 20 - PID:
0038: 30 30 30 30 30 34 30 30 00000400
0040: 2d 20 54 49 44 3a 20 20 - TID:
0048: 30 30 30 30 31 37 33 36 00001736
0050: 2d 20 43 4d 44 3a 20 20 - CMD:
0058: 22 43 3a 5c 57 49 4e 44 "C:\WIND
0060: 4f 57 53 5c 73 79 73 74 OWS\syst
0068: 65 6d 33 32 5c 6e 74 62 em32tb
0070: 61 63 6b 75 70 2e 65 78 ackup.ex
0078: 65 22 20 20 20 20 20 20 e"
0080: 2d 20 55 73 65 72 3a 20 - User:
0088: 49 4d 4d 53 5c 6a 72 65 IMMS\jre
0090: 79 65 73 20 20 20 20 20 yes
0098: 2d 20 53 69 64 3a 20 20 - Sid:
00a0: 53 2d 31 2d 35 2d 32 31 S-1-5-21
00a8: 2d 33 34 37 33 34 38 35 -3473485
00b0: 35 31 33 2d 33 34 32 36 513-3426
00b8: 31 34 37 34 36 37 2d 33 147467-3
00c0: 34 39 35 37 36 37 37 30 49576770
00c8: 37 2d 31 31 35 30 20 20 7-1150

ERROR 3

Event Type: Error
Event Source: VSS
Event Category: None
Event ID: 20
Date: 7/15/2006
Time: 11:38:55 AM
User: N/A
Computer: IMMSSVR01
Description:
Volume Shadow Copy Service error: A critical component required by the
Volume Shadow Copy service is not registered. This might happened if an
error occurred during Windows setup or during installation of a Shadow
Copy
provider. The error returned from CoCreateInstance on class with CLSID
{faf53cc4-bd73-4e36-83f1-2b23f46e513e} and Name VSSEvent is [0x80040154].

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 2d 20 43 6f 64 65 3a 20 - Code:
0008: 42 55 45 43 58 4d 4c 43 BUECXMLC
0010: 30 30 30 30 33 32 38 31 00003281
0018: 2d 20 43 61 6c 6c 3a 20 - Call:
0020: 42 55 45 43 58 4d 4c 43 BUECXMLC
0028: 30 30 30 30 37 30 39 36 00007096
0030: 2d 20 50 49 44 3a 20 20 - PID:
0038: 30 30 30 30 30 34 30 30 00000400
0040: 2d 20 54 49 44 3a 20 20 - TID:
0048: 30 30 30 30 31 37 33 36 00001736
0050: 2d 20 43 4d 44 3a 20 20 - CMD:
0058: 22 43 3a 5c 57 49 4e 44 "C:\WIND
0060: 4f 57 53 5c 73 79 73 74 OWS\syst
0068: 65 6d 33 32 5c 6e 74 62 em32tb
0070: 61 63 6b 75 70 2e 65 78 ackup.ex
0078: 65 22 20 20 20 20 20 20 e"
0080: 2d 20 55 73 65 72 3a 20 - User:
0088: 49 4d 4d 53 5c 6a 72 65 IMMS\jre
0090: 79 65 73 20 20 20 20 20 yes
0098: 2d 20 53 69 64 3a 20 20 - Sid:
00a0: 53 2d 31 2d 35 2d 32 31 S-1-5-21
00a8: 2d 33 34 37 33 34 38 35 -3473485
00b0: 35 31 33 2d 33 34 32 36 513-3426
00b8: 31 34 37 34 36 37 2d 33 147467-3
00c0: 34 39 35 37 36 37 37 30 49576770
00c8: 37 2d 31 31 35 30 20 20 7-1150