shadow copy:0x80042319

I am using SBS 2003 with SP1 and also have 3 hard drives and external backup disk. The scheduled backup fails permanently, but manual backups complete successfully. By manual backup I mean by going to the SBS SRV Management Console and clicking on the "Backup Now" button. So, all the settings are the same as for the scheduled backups as well. Can anyone tell me how to solve this issue? Thanks. Below is the error that I am getting:

=====================<BEGIN NTBACKUP LOG FILE>=====================
Backup Status
Operation: Backup
Active backup destination: File
Media name: "Small Business Server Backup (01).bkf created 2008/02/06 at
10:00 PM"

Volume shadow copy creation: Attempt 1.
Timeout before function completed

Error returned while creating the volume shadow copy:0x80042319.

Error returned while creating the volume shadow copy:80042319
Aborting Backup.

----------------------

Event Type: Error
Event Source: VSS
Event Category: None
Event ID: 12305
Date: 2008/02/06
Time: 10:25:34 PM
User: N/A
Computer: ONT-SBS2003S
Description:
Volume Shadow Copy Service error: Volume/disk not connected or not found.
Error context:

CreateFileW(\\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy131,0xc0000000,0x00000003,...).

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: 49 4e 43 49 43 48 4c 48 INCICHLH
0010: 30 30 30 30 30 32 32 30 00000220
0018: 2d 20 43 61 6c 6c 3a 20 - Call:
0020: 53 50 52 51 53 4e 50 43 SPRQSNPC
0028: 30 30 30 30 30 31 32 33 00000123
0030: 2d 20 50 49 44 3a 20 20 - PID:
0038: 30 30 30 30 36 30 32 30 00006020
0040: 2d 20 54 49 44 3a 20 20 - TID:
0048: 30 30 30 30 37 33 35 36 00007356
0050: 2d 20 43 4d 44 3a 20 20 - CMD:
0058: 43 3a 5c 57 49 4e 44 4f C:\WINDO
0060: 57 53 5c 53 79 73 74 65 WS\Syste
0068: 6d 33 32 5c 73 76 63 68 m32\svch
0070: 6f 73 74 2e 65 78 65 20 ost.exe
0078: 2d 6b 20 73 77 70 72 76 -k swprv
0080: 2d 20 55 73 65 72 3a 20 - User:
0088: 4e 54 20 41 55 54 48 4f NT AUTHO
0090: 52 49 54 59 5c 53 59 53 RITY\SYS
0098: 54 45 4d 20 20 20 20 20 TEM
00a0: 2d 20 53 69 64 3a 20 20 - Sid:
00a8: 53 2d 31 2d 35 2d 31 38 S-1-5-18

As per your question it seems that SP level should be atleast SP1. So you can try to exclude System State for a test. Some of them find that they have to do SS separately. Also check that VSS is running or not. You should also try to re-register your VSS dlls. As per the microsoft support this is the proper procedure to follow when re-registering the Volume Shadow Copy Service Dll's.

CD to Windows\System32
Net stop vss
Net stop swprv
regsvr32 ole32.dll
regsvr32 vss_ps.dll
Vssvc /Register
regsvr32 /i swprv.dll
regsvr32 /i eventcls.dll
regsvr32 es.dll
regsvr32 stdprov.dll
regsvr32 vssui.dll
regsvr32 msxml.dll
regsvr32 msxml3.dll
regsvr32 msxml4.dll

After that restart your server. After the restart, open cmd prompt and then run: vssadmin list writers

Make sure that all your writers are displayed without any errors, if you are backing up to tape, MS CSS usual suggestions are:

1. Try the job to a local or external hard drive
2. Check the HCL for the tape drive compatibility with Windows Server 2003.

If I execute the followings commands

CD to Windows\System32
Net stop vss
Net stop swprv
regsvr32 ole32.dll
regsvr32 vss_ps.dll
Vssvc /Register
regsvr32 /i swprv.dll
regsvr32 /i eventcls.dll
regsvr32 es.dll
regsvr32 stdprov.dll
regsvr32 vssui.dll
regsvr32 msxml.dll
regsvr32 msxml3.dll
regsvr32 msxml4.dll

is there any chance to corrupt my server's database or any data?

I think No, if you want to register dlls then it wont corrupt any data or databases. You can check the SBS support which is working on:
http://blogs.technet.com/sbs/default.aspx

And also check your SBS with the SBS Best Practices Analyzer
http://blogs.technet.com/sbs/archive...A/default.aspx

Thanks a lot for your reply.