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When I add and rescan the server in VEEAM backup and replication communication, error is appear : 

4/7/2025 5:47:12 PM Warning Failed to connect to xxx.xxx.xxx.3 Details: Failed to call RPC function 'EpAgentCollectSystemInfo': :WMI] Empty result. 

 

 

I was enable all services and inbound firewall related RPC such as WMI ; RPC ; WRM on domain. (server in domain active directory)

Log file : 

<07.04.2025 17:45:47.498]    <17>    Info (3)    -------------------------------------------------------------------------------------
-07.04.2025 17:45:47.498]    <17>    Info (3)    STARTEPAGENTDISCOVERYJOB
T07.04.2025 17:45:47.498]    <17>    Info (3)    b1977272-5e9e-47bd-bdae-e91d23f5506a
d07.04.2025 17:45:47.498]    <17>    Info (3)    58612558-af3f-4225-a21c-72c77993cae5
307.04.2025 17:45:47.498]    <17>    Info (3)    -------------------------------------------------------------------------------------
-07.04.2025 17:45:47.501]    <17>    Info (3)    4CJobLogsManager] Cannot find quota. Job with id b1977272-5e9e-47bd-bdae-e91d23f5506a was not found.
407.04.2025 17:45:47.540]    <17>    Info (3)    1Session] Id '58612558-af3f-4225-a21c-72c77993cae5', State 'Working'.
f07.04.2025 17:45:47.584]    <17>    Info (3)    .MachineSemaphore] Waiting for semaphore 'Global\DiscoveryJobSemaphore'
t07.04.2025 17:45:47.584]    <17>    Info (3)    [MachineSemaphore] Waiting for semaphore 'Global\DiscoveryJobSemaphore' complete
g07.04.2025 17:45:47.602]    <17>    Info (3)    e07.04.2025 17:45:47.734]    <17>    Info (3)    rSEpHostCredentialsFinder] Using credentials from an include container 4d303e12-5b0d-4d29-a33e-02bbcac38ddd
i07.04.2025 17:45:47.789]    <17>    Info (3)    0CEpAgentDiscoveryTaskBuilder] Creating rescan task. Agent 172.21.12.3, parent container ID 4d303e12-5b0d-4d29-a33e-02bbcac38ddd parent container name 172.21.12.3. Operation Rescan, install driver False, install agent False, upgrade apps False, deploy plugins False, reboot allowed False
e07.04.2025 17:45:48.143]    <54>    Info (3)    bRPC] Loading options.
007.04.2025 17:45:48.227]    <54>    Info (3)    RPC] RPC confirm session has been created. Id: {116e64f2-5168-4a7b-81a3-9c57074da873}
R07.04.2025 17:45:48.252]    <54>    Info (3)    2RPC] Destroying RPC confirm session. Id: {116e64f2-5168-4a7b-81a3-9c57074da873}
o07.04.2025 17:45:48.280]    <54>    Info (3)    1RPC] RPC confirm session has been created. Id: {b2ec82a4-19a4-4fc9-abaa-0dd19471ae79}
o07.04.2025 17:45:48.378]    <54>    Info (3)    IRPC] RPC confirm session has been created. Id: {29f1fcd4-2c3b-4dfe-8f9b-6edaa6668d01}
07.04.2025 17:45:48.420]    <54>   Error (3)    aRPC] IWMI] Empty result.
f07.04.2025 17:45:48.420]    <54>   Error (3)    lRPC] --tr:Failed to complete RPC request. Method: tEpAgentCollectSystemInfo], In XML: <InputArguments />]
[07.04.2025 17:45:48.420]    <54>   Error (3)    gRPC] --tr:Failed to invoke RPC request
u07.04.2025 17:45:48.420]    <54>   Error (3)    4RPC] --tr:Failed to call DoRpc. CmdName: tDoSerialRpc] inParam: r<InputArguments/>].
07.04.2025 17:45:48.420]    <54>   Error (3)    lRPC] --tr:Failed to call DoRpcWithBinary. Method: tDoSerialRpc], In xml: [<InputArguments/>]
&07.04.2025 17:45:48.420]    <54>   Error (3)    DRPC] --tr:Failed to call DoRpcWithBinary
07.04.2025 17:45:48.420]    <54>   Error (3)    0RPC] --tr:Failed to do RPC call with serialized data, Strategy type: DefaultStrategy
207.04.2025 17:45:48.420]    <54>   Error (3)    PRPC] --tr:Failed to call cDoSerialRpc], session id: {29f1fcd4-2c3b-4dfe-8f9b-6edaa6668d01}
007.04.2025 17:45:48.420]    <54>   Error (3)    CRPC] --tr:Failed to call SEpAgentCollectSystemInfo]
407.04.2025 17:45:48.427]    <54>    Info (3)    8RPC] Destroying RPC confirm session. Id: {29f1fcd4-2c3b-4dfe-8f9b-6edaa6668d01}
e07.04.2025 17:46:09.619]    <54>   Error (3)    RPC] RPC client failed to call method InvokerTestConnection]
d07.04.2025 17:46:09.619]    <54>   Error (3)    0RPC] The RPC server is unavailable.
[07.04.2025 17:46:09.619]    <54>   Error (3)    eRPC] An exception was thrown from thread 24940].
07.04.2025 17:46:09.619]    <54>    Info (3)    rRPC] Reconnecting...
907.04.2025 17:46:09.619]    <54>    Info (3)     RPC] Retrying RPC call. Attempt: r1], Method: 2InvokerTestConnection]
g07.04.2025 17:46:30.682]    <54>   Error (3)    4RPC] RPC client failed to call method InvokerTestConnection]
n07.04.2025 17:46:30.682]    <54>   Error (3)    oRPC] The RPC server is unavailable.
t07.04.2025 17:46:30.682]    <54>   Error (3)    aRPC] An exception was thrown from thread 724940].
607.04.2025 17:46:30.682]    <54>   Error (3)    PRPC] The RPC server is unavailable.
07.04.2025 17:46:30.682]    <54>   Error (3)    ARPC] RPC function call failed. Function name: InvokerTestConnection]. Target machine: gxxx.xxx.xxx.xxx:6163].
h07.04.2025 17:46:51.744]    <54>   Error (3)    .RPC] RPC client failed to call method InvokerTestConnection]
e07.04.2025 17:46:51.744]    <54>   Error (3)    iRPC] The RPC server is unavailable.
007.04.2025 17:46:51.744]    <54>   Error (3)    CRPC] An exception was thrown from thread e24940].
o07.04.2025 17:46:51.744]    <54>    Info (3)    rRPC] Reconnecting...
07.04.2025 17:46:51.744]    <54>    Info (3)    RPC] Retrying RPC call. Attempt: [1], Method: pInvokerTestConnection]
[07.04.2025 17:47:12.791]    <54>   Error (3)     RPC] RPC client failed to call method .InvokerTestConnection]
707.04.2025 17:47:12.791]    <54>   Error (3)    RRPC] The RPC server is unavailable.
s07.04.2025 17:47:12.791]    <54>   Error (3)    4RPC] An exception was thrown from thread a24940].
m07.04.2025 17:47:12.791]    <54>   Error (3)    2RPC] The RPC server is unavailable.
R07.04.2025 17:47:12.791]    <54>   Error (3)    :RPC] RPC function call failed. Function name: RInvokerTestConnection]. Target machine: [xxx.xxx.xxx.xxx:6163].
407.04.2025 17:47:13.244]    <17>    Info (3)    RMainThread] Private fixes deployment is allowed: False (inappropriate operation type ('Rescan') while in SelectedHosts mode)
n07.04.2025 17:47:13.244]    <17>    Info (3)    Set LastRescanTime for 4d303e12-5b0d-4d29-a33e-02bbcac38ddd, name xxx.xxx.xxx.xxx
i07.04.2025 17:47:13.244]    <17>    Info (3)    nMainThread] Skipping Mongo discovery: not a protection group or selected containers discovery
07.04.2025 17:47:13.244]    <17>    Info (3)    rMainThread] Rescan completed.
d07.04.2025 17:47:17.728]    <17>    Info (3)     MachineSemaphore] Releasing semaphore 'Global\DiscoveryJobSemaphore'
n07.04.2025 17:47:17.728]    <17>    Info (3)    r07.04.2025 17:47:17.728]    <17>    Info (3)    Job has been stopped successfully. Name: nRescan of 1xxx.xxx.xxx.xxx], JobId: bb1977272-5e9e-47bd-bdae-e91d23f5506a]
107.04.2025 17:47:17.744]    <17>    Info (3)    nJobSession] Completing session '58612558-af3f-4225-a21c-72c77993cae5'.
207.04.2025 17:47:17.744]    <17>    Info (3)    Job session '58612558-af3f-4225-a21c-72c77993cae5' has been completed, status: 'Warning'.
b07.04.2025 17:47:17.776]    <54>    Info (3)    &RPC] Destroying RPC confirm session. Id: {b2ec82a4-19a4-4fc9-abaa-0dd19471ae79}
-07.04.2025 17:47:17.791]    <17>    Info (3)    ;CJobLogsManager] Cannot find quota. Job with id b1977272-5e9e-47bd-bdae-e91d23f5506a was not found.
'07.04.2025 17:47:17.791]    <17>    Info (3)    Job b1977272-5e9e-47bd-bdae-e91d23f5506a not found. Cleanup cloud connection cache
-07.04.2025 17:47:17.791]    <17>    Info (3)    1SVccTransportClientGlobalCache] Initializing VCC transport client provider, reason: first initialization
07.04.2025 17:47:17.823]    <17>    Info (3)        Job event 'ready2finish' was created for session '58612558-af3f-4225-a21c-72c77993cae5'. Event full name: 'Global\ready2finishvmjobevent58612558-af3f-4225-a21c-72c77993cae5'
a07.04.2025 17:47:17.963]    <17>    Info (3)    Job Rescan of xxx.xxx.xxx.xxx] is ready to finish. SessionId: :58612558-af3f-4225-a21c-72c77993cae5]
07.04.2025 17:47:17.963]    <17>    Info (3)        Job event 'ready2finish' was disposed. Session: '58612558-af3f-4225-a21c-72c77993cae5'.
807.04.2025 17:47:17.963]    <17>    Info (3)        Job event 'finished' was disposed. Session: '58612558-af3f-4225-a21c-72c77993cae5'.
07.04.2025 17:47:17.963]    <17>    Info (3)        Job process lock was disposed.
t07.04.2025 17:47:17.963]    <17>    Info (3)        Job process lock was disposed.

​@datnq.nguyen Based on the error message and screenshot i would say that you are trying to add/install the Windows agent on the physical machine? Or is the Veeam agent already installed on the windows machine?

 

 

​@datnq.nguyen Based on the error message and screenshot i would say that you are trying to add/install the Windows agent on the physical machine? Or is the Veeam agent already installed on the windows machine?

 

 

i scan new server, but can not complete because error appear!!

Hi, do you have allowed veeam ports as well like 6163/tcp, what i see from logs.

if this port is allowed, it looks like an issue with domain account, that is not administrator on that machine.

Unfortunately, we won’t be able to tell anything based just on the information except open a Support Case.

 

>g07.04.2025 17:45:48.420]    <54>   Error (3)    3RPC] Empty result.

For whatever reason, system information collection over WMI returned nothing. The logs above do not give a hint as to why so we can at best guess. I do agree with ​@makacmar that it’s probably permissions (usually is), but it’s a question of “which permissions are restricted?”, which only the logs can tell.

Start with a Support case, it will be best bet.

 

Hello,

In the past, I had some issues with the Veeam Agent caused by WMI. If I remember correctly, I had to format and upgrade the server to a version where WMI was working properly.

You might find this KB helpful for troubleshooting and isolating WMI-related problems with Veeam products.

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