every time i run a backup i receive this error

thanks wantabe2
i done that already but to no luck

Please post the logs, as that will help to determine the issue.....That being said here are a couple of common things with Arc Serve:

Disable File Estimate as sometimes arcserve will time out before it can complete the estimate.

also

https://support.ca.com/irj/portal/anonymous/kbtech?ipLogNrow=0&searchID=TEC475333&docid=475333&bypass=yes&fromscreen=kbresults&fromKBResultsScreen=T

also

When you upgrade to 12.5 or sometimes on new installs:

Failed to receive data from the Client Agent.
Reason:
The network connection was lost or a response was not received from the agent within the specified timeout period. A Windows error code may be embedded in the message to indicate the reason for failure.
Action:
Check the network connections and verify that the Agent for Microsoft SQL Server services are running. Increase the ReceiveTimeout value in the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\CA\ARCserve Backup\Base\Task\Remote
This value is measured in seconds. The default value is 1200 (20 minutes).
Note: This setting is shared for all agents which operate under the Universal Agent service.
114 Agent

hi mikeewalton:
heres a copy of the log

iv tried this "Disable File Estimate as sometimes arcserve will time out before it can complete the estimate." but made no difference
and edited the reg key still no difference
i have a feeling that it has something to do with authentication but just cant put my finger on it

im gona have a reed of the doc from the link and hopfully something there will work
thanks for your help    



*******************[MESSAGES OF MASTER JOB]*******************
CA ARCserve Backup --
Backup[SubJob]Totals For
...................
SubJob 1Job No....................... 14Job
 ID....................... 112
Workstation.................. SERVERa ( 192.168.5.200 )
Total Session(s)............. 0
Total Size (Disk)............ 0
 KBTotal Size (Media)........... 0
 KBElapsed Time................. 0s
Average Throughput...........0 KB/minTotal
 Error(s)/Warning(s).... 2/0
SubJob Status................ Failed
[Master Job]Totals For...................Master Job
Job No....................... 13
Job ID....................... 111
Total Session(s)............. 0
Total Skip(s)................ 0
Total Size (Disk)............ 0
 KBTotal Size (Media)........... 0
 KBElapsed Time................. 0s
Average Throughput........... 0 KB/min
Total Error(s)/Warning(s)....2/0
Backup Operation Failed.
*******************[MESSAGES OF CHILD JOB #1]*******************
CA ARCserve Backup -- BackupTotals For...................
SERVERa ( 192.168.5.200 )
Total Session(s)............. 0
Total Skip(s)................ 0
Total Size (Disk)............ 0 KB
Total Size (Media)........... 0 KB
Elapsed Time................. 0s
Average Throughput........... 0 KB/min
Total Error(s)/Warning(s).... 1/0
Node Status.................. Failed
Totals For................... SERVERa ( 192.168.5.200 )
Total Session(s)............. 0
Total Skip(s)................ 0
Total Size (Disk)............ 0 KB
Total Size (Media)........... 0 KB
Elapsed Time................. 0s
Average Throughput........... 0
 KB/minTotal
Error(s)/Warning(s).... 1/0
Node Status.................. Failed
Totals For................... Job
Total Session(s)............. 0
Total Skip(s)................ 0
Total Size (Disk)............ 0 KB
Total Size (Media)........... 0 KB
Elapsed Time................. 0s
Average Throughput........... 0 KB/min
Total Error(s)/Warning(s)....
2/0Backup Operation Failed.
[ERRORS & WARNINGS]
16/08/2009 13:14:16 E8535 Failed to receive data from the agent.(Node=SERVERa @192.168.5.200)
16/08/2009 13:34:22 E8535 Failed to receive data from the agent. (Node=-SERVERa @192.168.5.200)

maybe i should have mentioned that this is a local install i don't no dose this make a difference

What are you trying to backup what agent are you using?